Genetics Quiz Questions on Heredity and Inheritance
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Q1. The theory that holds that
information from the soma is collected
in the germ cells or gametes is called
A.
Pre-formationism.
B.
Blending theory.
C.
Spermism.
D.
Ovism.
E.
Pangenesis.
Q2. What does the first law of Mendel
predict about the gametes of an
individual with genotype Aa?
A.
½ A and ½ a gametes.
B.
Aa gametes are formed.
C.
3A for every 1a.
D.
They form a Punnett square.
E.
AA, Aa, and aa gametes are formed.
Q3. If red is dominant over white and a
cross between a white male yields all
red offspring, the female must be
A.
AA.
B.
Aa.
C.
aa.
Q4. The distance a red kangaroo can
jump is determined by 3 genes (traits)
each of which have an allele that
contributes to the distance (capital
letter) and an allele that does not
(small letter). How many distance
classes are there among the
kangaroos?
A.
3.
C. 5.
E. 7.
B.
4.
D. 6.
Q5. In a population of fruit flies eye
color has 12 different alleles. Any given
fly will have ______ copies of eye color.
A.
2.
B.
4.
C.
8.
D.
12.
E.
24.
Q1.
The probability that an individual
with the genotype MmNnPp will produce
a gamete containing simultaneously
M,N, and P is
A.
0.
B.
1/8.
C.
1/4.
D.
1/2.
E.
1.
Q2. What cross yields a phenotypic ratio
of offspring of 3 A-B-, 1 A-bb, 3 aaB-, and
1 aabb?
A.
AaBb x aabb.
B.
AaBb x aaBb.
C.
AaBb x AaBb.
D.
AaBb x Aabb.
E.
AaBb x AABb.
Q3.
You cross a female with genotype
(AabbCc) with a male of genotype
(aaBbCc). What is the probability of
obtaining an
aaB-C- male
kitten?
A.
3/4.
B.
1/8.
C.
3/16.
D.
3/32.
E.
1/64.
Q4. For a penta-hybrid cross you
calculate
2
= 7.79. The
2
value for p =
0.05 is 9.488. You
A.
Accept the model, because p>0.05.
B.
Accept the model, because p<0.05.
C.
Reject the model, because p>0.05.
D.
Reject the model, because p<0.05.
Q5.
Leg feathering in chickens is a polygenic
trait? A hybrid cross of two chickens with leg
feathering produces 15 chicks with and 1 chick
without leg feathers. What is the ratio of
feathered and non-feathered chicks in the
corresponding test cross?
A.
1:1.
B.
1:1:1:1.
C.
9:3:3:1.
D.
15:1.
E.
3:1.
Q. Ovists hold that
Q. Antoon van Leeuwenhoek was a(n)
A.
Pre-formationist.
B.
Blender.
C.
Lamarckist.
D.
Spermist.
E.
Ovist.
Q. Inheritance of acquired traits is
called
A.
Pre-formationism.
B.
Blending.
C.
Spermists.
D.
Ovists.
E.
Lamarckism.
Q. Weissman cut the tails of successive
generations of mice to disprove
A.
Pre-formationism.
B.
Blending.
C.
Spermism.
D.
Ovism.
E.
Lamarckism.
Q. How many genotypically different
gametes are formed by AaBbCc?
A.
1.
B.
2.
C.
4.
D.
6.
E.
8.
Q. What are the gametes produced by
AaBb?
A.
A, B, a, b.
B.
AA, Aa, aa, BB, Bb, bb.
C.
AB, Ab, aB, ab.
D.
A-B-, A-bb, aaB-, aabb.
Q. In turnips, shape is a trait with
incomplete dominance between
alleles. If a cross between a long and a
round turnip yields all oval offspring,
the number of alleles is
A.
1.
B.
2.
C.
3.
Q. If a single trait cross yields three
different phenotypes, there must be
_______ dominance between the
alleles.
A.
complete.
B.
incomplete
C.
co- .
D.
Mendelian.
E.
Reduction.
Q. A cross resulted in 27 straight-black
and 9 curly-red pups. The genotype of
the parents is
A.
AaBb x AaBb.
B.
AA x aa.
C.
Aa x aa.
D.
Aa x Aa.
E.
Aa x aa.
Q. The distance red kangaroos of a
population jump forms a bell-shaped
curve. Distant jumped is a
A.
Dominant trait.
B.
Co-dominant trait.
C.
Polymorphic trait.
D.
Mendelian trait.
E.
Polygenic trait.
Q. Traits that have more than two
alternative forms are called
A.
Polygenic.
B.
Polymorphic.
C.
Polyarchic.
D.
Polyarthritic.
E.
Polyphenic.
Q. The cross that yields half of the
offspring with the parental and half
with the heterozygous phenotype is
A.
AA x aa.
B.
AA x Aa.
C.
Aa x Aa.
D.
aa x aa.
E.
Aa x bb.
Q. In horses, a chestnut stallion and a
white mare have a roan foal. Between
the coat color alleles there is
A.
Complete dominance.
B.
Polygenic dominance.
C.
Polymorphic dominance.
D.
Incomplete dominance.
E.
Co-dominance.
Q. If the alleles of a trait are co-dominant
what is the df of the corresponding
2
–test?
A.
1.
B.
2.
C.
3.
Q. How many terms are there in
2
of a
monohybrid cross with incomplete
dominance between the alleles?
A.
1.
B.
2.
C.
3.
D.
4.
E.
5.
Q.
A true-breeding plant is one that
A.
Produces offspring that are different
from the parents.
B.
Forms hybrid offspring through cross
pollination.
C.
Produces offspring that are always
the same as the parents.
D.
Can only reproduce with itself.
E.
Produces offspring that never lie.
Q.
A true-breeding plant is one What
property distinguishes Mendel’s
investigation from previous studies? He
A.
Used true-breeding pea plants.
B.
Quantified his results.
C.
Examined many different traits.
D.
Examined the segregation of traits.
E.
As amonk, he prayed a lot.
Q.
Alternative forms of genetic information
for a trait are called
A.
alleles.
B.
Genes.
C.
Factors.
D.
Heterozugotes.
E.
Diploids.
Q.
When Mendel crosses yellow and green
peas all the offspring were yellow. What
was actually transmitted from parents to
offspring?
A.
A fluid called a ‘gemule’.
B.
Similarity in appearance, size and other
features.
C.
Specialized cells of different organs and
structures of the parent plants.
D.
Yellow and green pigment.
E.
Encoded information that determines the
potential to develop pea color.
Q.
A An organism’s ____ is determined
by its _______
A.
Allelotype; genotype.
B.
Genotype; phenotype.
C.
Genotype; allelotype.
D.
Phenotype; genotype.
E.
Allelotype; phenotype.
Q.
Which of the crosses produces
progeny of the recessive phenotype?
A.
Ww x WW.
B.
WW x ww.
C.
WW x Ww.
D.
WW x WW.
E.
Ww x Ww.
Q.
The shape of radishes may be long, round,
or oval. A cross between long and round
radishes produces oval offspring. The
phenotypic ratio of the offspring of a cross
between two oval-shaped parents is
A.
1 round: 2 oval: 1 long.
B.
1 long: 2 round: 1 oval.
C.
1 round: 2 long: 1 oval.
D.
3 long: 1 round.
E.
2 oval: 2 round.
Q.
The coat color of the rabbit can be
black, brown, gray, silver, himalayan,
or albino. Of the coat color trait any
given rabbit may have as genotype
A.
None of the different alleles.
B.
A single allele.
C.
Only 2 of the different alleles.
D.
Any combination of 1, 2, or more of
the different alleles.
E.
All the different alleles.
Q.
If two individuals heterozygius for
two genes are crossed, this would be
called a
A.
Double zygote cross.
B.
Hybrid cross.
C.
Test cross.
D.
Dihybrid cross.
E.
F1 cross.
Q.
The observable outward manifestation of
the genes of an individual is referred to
as its
A.
Genotype.
B.
phenotype.
C.
archetype.
D.
idiotype.
E.
Morphotype.
Q.
Co-dominance reflects the interaction
between alleles of
A.
A single trait.
B.
Different traits.
C.
Many traits.
D.
Dominant traits.
E.
Recessive traits.
Q.
Whereas organisms are _____ their
gametes are _____.
A.
Diploid; polyploid.
B.
Polyploid; haploid.
C.
Polyploid; diploid.
D.
Diploid; haploid.
E.
Big, small.
Q.
By shopping off the tails of several
generations of mice, August Weismann
dispelled with the _______ theory.
A.
Inheritance.
B.
Preformationism.
C.
Ovism.
D.
Evolution.
E.
Lamarckism.
F.
Blending.
G.
Mendel.
Q.
What is the probability that an offspring
of a trihybrid cross will have the
phenotype aqaB-cc?
A.
3/64.
B.
9/16.
C.
1/64.
D.
5/12.
E.
27/64.
Q.
A phenotype that shows continuous
variation among the individuals of a
population is called
A.
Polymorphic.
B.
Polygenic.
C.
Polyploid.
D.
Dominant.
E.
Pleiotrophic.
Q.
If a population contains 75 short-haired
and 25 long-haired cats, the frequency of
the recessive allele (long-hair) of the
parents is
A.
0.75.
B.
0.25.
C.
0.50.
D.
0.05.
E.
1.00.
Q.
In hamsters black is dominant over brown.
Allele frequency of black is 0.4 and of
brown is 0.6. How many brown animals do
you expect in next year’s population of 100
animals?
A.
16.
B.
36.
C.
60.
D.
84.
E.
75.
Q.
In hamsters black is dominant over brown.
Allele frequency of black is 0.4 and of
brown is 0.6. How many black animals do
you expect in next year’s population of 100
animals?
A.
16.
B.
36.
C.
60.
D.
84.
E.
75.
Q.
Y
ou have compared the phenotypic ratio of the
offspring to that predicted by a dihybrid cross.
You calculated P>0.05. P is the probability
A.
With which the dihybrid model by chance alone
correctly explains the cross.
B.
That you are correct by chance alone when you
accept the results of the test.
C.
Of obtaining a dominant phenotype in a dihybrid
cross.
D.
With which observed and predicted number of
phenotypes differ by chance alone.
E.
Of obtaining by chance alone a chi-square value
such as you calculated between observed and
predicted values.
Q.
What is the phenotypic ratio of
offspring of a test cross if the phenotypic
ratio of the corresponding hybrid cross is
9:3:3:1?
A.
1:1.
B.
1:1:1:1.
C.
3:1.
D.
15:1.
E.
9:3:1.
Q1. Flower color and plant size are assorted
independently in violets. Let W be purple
flowers an w white flowers, and D be tall
plants and d be dwarf plants. What
combination of gametes is produced by an
individual heterozygous for both traits?
A.
WwDd.
B.
Ww and Dd.
C.
W, w, D, and d.
D.
WD, Wd, wD, and wd.
E.
None, such a plant does not produce gametes.
Q. Hair length and hair color of cats are inherited following
Mendel’s laws. Short hair (L) is dominant over long
hair (l) and black (B) is dominant over blue (b).
What is the phenotype of the parent that produce 9
black short-haired, 3 blue short-haired, 3 black
long-haired, and 1 blue long-haired kitten?
A.
Blue long-haired x blue long-haired.
B.
Black short-haired x blue long-haired.
C.
Black long-haired x blue short-haired.
D.
Black long-haired x blue long-haired.
E.
Black short-haired x black short-haired.
Q.
According to Mendel’s law of
inheritance
A.
Genes exist in pairs and the members of a pair
separate during gamete formation.
B.
Genes exist in pairs on the same chromosome.
C.
Both members of a gene pair always go to the
same gamete.
D.
The members of one pair are dependent on
the other gene pair for their segregation.
E.
Alleles of a pair differ in their location on the
homologous chromosome.
Q.
An organism has the genotype AaBb.
According to Mendel’s law of independent
inheritance, which of the following gametes
will this organism produce?
A.
½ with A and a, but none with B or b.
B.
½ with A and B together, and ½ with a and b
together.
C.
¼ with a and b together, ¼ with a and B
together, ¼ with A and b together, and ¼ with
A and B together.
D.
All with all four alleles.
E.
Equal numbers of primary AB and ab.
Q.
When two haploid gametes that fuse
to form a zygote contain two different
alleles of a given gene, the offspring is
said to be
A.
Recessive.
B.
Haploid.
C.
Unable to survive.
D.
Homozygous.
E.
Heterozygous.
Q.
Short hair (A) in rabbits is dominant
over long hair (a). In a litter of 12
offspring all pups have short hair. What is
the genotype of the parents?
A.
Aa x Aa.
B.
Aa x aa.
C.
AA xaa.
D.
aa x aa.
Q.
What is the probability of obtaining an
individual with the genotype CC from a
cross between individuals with Genotype
CC and Cc?
A.
0.
B.
1/8.
C.
1/4.
D.
1/2.
E.
1.
Q.
In cats, black coat color is dominant
over blue. A female black cat whose
motherr is blue mates with a blue male.
If this black female has a litter of six
kittens, how many kittens are expected
to be blue?
A.
3.
B.
2
C.
1
D.
none.
E.
all.
Q. What cross yields a phenotypic ratio of
offspring of 3 A-B-, 3 A-bb, 1 aaB-, and 1
aabb
?
A.
AaBb x AaBb.
B.
AaBb x aabb.
C.
AaBb x aaBb.
D.
AaBb x Aabb.
E.
AaBb x AABb.
In peas, seeds may be round (R) or wrinkled (r).
What proportion of the offspring in the following
crosses would be expected to be wrinkled?
a.
RR x rr
b.
Rr x Rr
c.
Rr x rr
In peas, seeds can be round (R) or wrinkled (r) and either
yellow (Y) or green (y). Stem length may result in a tall (T)
or dwarf (t) plant.
In the cross (parent A) TTYyRr x TtYyRr (Parent B), how
many different types of gametes can be produced by each
parent and how many different phenotypes are possible
from the cross?
In peas, seeds can be round (R) or wrinkled (r) and either
yellow (Y) or green (y). Stem length may result in a tall (T)
or dwarf (t) plant.
In the cross (parent A) TTYyRr x TtYyRr (Parent B), what
proportion of the offspring would be tall with yellow,
wrinkled seeds?
In peas, seeds can be round (R) or wrinkled (r) and either
yellow (Y) or green (y). Stem length may result in a tall (T)
or dwarf (t) plant.
In the cross TtYYRr x ttYYrr what proportion of the
offspring would be expected to be tall plants with round,
yellow seeds?
Assume that D, E, F, G, H, and I are autosomal genes on
different chromosomes. From the mating (parent A)
DdeeFfGGHhIi x (parent B) DdEEFFGgHhii:
What is the probability that one of the offspring will have
the genotype DdEeFFGghhIi?
Assume that D, E, F, G, H, and I are autosomal genes on
different chromosomes. From the mating (parent A)
DdeeFfGGHhIi x (parent B) DdEEFFGgHhii:
What is the probability that one of the offspring will be
heterozygous for each allele?
Assume that D, E, F, G, H, and I are autosomal genes on
different chromosomes. From the mating (parent A)
DdeeFfGGHhIi x (parent B) DdEEFFGgHhii:
How many different kinds of gametes can be produced by
each parent
In horses, RR = red, Rr = roan, and rr = white. What are
the predicted color phenotypes and their frequencies for
the offspring from crosses between:
a.
a red bstallion and a white mare.
b.
a red stallion and a roan mare.
c.
a roan stallion and a roan mare.
In pea plants: Y (yellow) is dominant to y (green), R (round)
is dominant to r (wrinkled), B (bitter) is dominant to b
(sweet), S (smooth) is dominant to s (hairy), L (long pod)
shows incomplete dominance to 1 (short pod) (Ll is
medium in length). Given this cross: (P) Yy Rr Bb SS Ll
(male) x yy RR Bb Ss Ll (female)
a. How many different gametes can be formed by the
female plant?
In pea plants: Y (yellow) is dominant to y (green), R (round)
is dominant to r (wrinkled), B (bitter) is dominant to b
(sweet), S (smooth) is dominant to s (hairy), L (long pod)
shows incomplete dominance to 1 (short pod) (Ll is
medium in length). Given this cross: (P) Yy Rr Bb SS Ll
(male) x yy RR Bb Ss Ll (female)
b. How many different genotypes are possible in the F1
offspring?
In pea plants: Y (yellow) is dominant to y (green), R (round)
is dominant to r (wrinkled), B (bitter) is dominant to b
(sweet), S (smooth) is dominant to s (hairy), L (long pod)
shows incomplete dominance to 1 (short pod) (Ll is
medium in length). Given this cross: (P) Yy Rr Bb SS Ll
(male) x yy RR Bb Ss Ll (female)
c. How many different phenotypes are possible in the F1
offspring?
In pea plants: Y (yellow) is dominant to y (green), R (round)
is dominant to r (wrinkled), B (bitter) is dominant to b
(sweet), S (smooth) is dominant to s (hairy), L (long pod)
shows incomplete dominance to 1 (short pod) (Ll is
medium in length). Given this cross: (P) Yy Rr Bb SS Ll
(male) x yy RR Bb Ss Ll (female)
d. What percent of the F1 individuals will be:
green, bitter, and smooth _______________.
In pea plants: Y (yellow) is dominant to y (green), R (round)
is dominant to r (wrinkled), B (bitter) is dominant to b
(sweet), S (smooth) is dominant to s (hairy), L (long pod)
shows incomplete dominance to 1 (short pod) (Ll is
medium in length). Given this cross: (P) Yy Rr Bb SS Ll
(male) x yy RR Bb Ss Ll (female)
d. What percent of the F1 individuals will be:
hairy, medium, and sweet ______________ .
In pea plants: Y (yellow) is dominant to y (green), R (round)
is dominant to r (wrinkled), B (bitter) is dominant to b
(sweet), S (smooth) is dominant to s (hairy), L (long pod)
shows incomplete dominance to 1 (short pod) (Ll is
medium in length). Given this cross: (P) Yy Rr Bb SS Ll
(male) x yy RR Bb Ss Ll (female)
d. What percent of the F1 individuals will be
round, bitter, and long _________________.
In humans, the ABO blood groups are controlled by three
alleles: the alleles for A and B type blood are co-dominant
toward each other, and both are dominant to the allele for
O type blood.
If a person with type AB blood marries someone with type
O blood, what are the possible phenotypes of their
offspring?
In humans, the ABO blood groups are controlled by three
alleles: the alleles for A and B type blood are co-dominant
toward each other, and both are dominant to the allele for
O type blood.
In the following, determine the genotypes of the parents:
One parent has type A and the other has type B, but all
four blood groups are represented in the children.
In humans, the ABO blood groups are controlled by three
alleles: the alleles for A and B type blood are co-dominant
toward each other, and both are dominant to the allele for
O type blood.
In the following, determine the genotypes of the parents:
One parent has type AB and the other has type B, but of
the children 1/4 have type A, 1/4 have type AB, and 1/2
have type B.
In humans, the ABO blood groups are controlled by three
alleles: the alleles for A and B type blood are co-dominant
toward each other, and both are dominant to the allele for
O type blood.
In the following cases of disputed paternity, determine
the probable parent.
Mother is type B, child is type O. Father #1 is A; father #2
is AB.
In humans, the ABO blood groups are controlled by three
alleles: the alleles for A and B type blood are co-dominant
toward each other, and both are dominant to the allele for
O type blood.
In the following cases of disputed paternity, determine
the probable parent.
Mother is type B, child is type AB. Father #1 is A; father
#2 is B.
Test your knowledge on genetics with these quiz questions covering topics like Mendelian laws, dominant and recessive traits, gamete formation probabilities, and genetic crosses. Explore concepts such as allelic inheritance, phenotypic ratios, and genetic probabilities in various scenarios. Improve your understanding of heredity and genetic principles through these challenging questions.
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Q1. The theory that holds that information from the soma is collected in the germ cells or gametes is called A. Pre-formationism. B. Blending theory. C. Spermism. D. Ovism. E. Pangenesis.
Q2. What does the first law of Mendel predict about the gametes of an individual with genotype Aa? A. A and a gametes. B. Aa gametes are formed. C. 3A for every 1a. D. They form a Punnett square. E. AA, Aa, and aa gametes are formed.
Q3. If red is dominant over white and a cross between a white male yields all red offspring, the female must be A. AA. B. Aa. C. aa.
Q4. The distance a red kangaroo can jump is determined by 3 genes (traits) each of which have an allele that contributes to the distance (capital letter) and an allele that does not (small letter). How many distance classes are there among the kangaroos? A. 3. B. 4. C. 5. D. 6. E. 7.
Q5. In a population of fruit flies eye color has 12 different alleles. Any given fly will have ______ copies of eye color. A. 2. B. 4. C. 8. D. 12. E. 24.
Q1. The probability that an individual with the genotype MmNnPp will produce a gamete containing simultaneously M,N, and P is A. 0. B. 1/8. C. 1/4. D. 1/2. E. 1.
Q2. What cross yields a phenotypic ratio of offspring of 3 A-B-, 1 A-bb, 3 aaB-, and 1 aabb? A. AaBb x aabb. B. AaBb x aaBb. C. AaBb x AaBb. D. AaBb x Aabb. E. AaBb x AABb.
Q3. You cross a female with genotype (AabbCc) with a male of genotype (aaBbCc). What is the probability of obtaining an aaB-C- male kitten? A. 3/4. B. 1/8. C. 3/16. D. 3/32. E. 1/64.
Q4. For a penta-hybrid cross you calculate 2 = 7.79. The 2 value for p = 0.05 is 9.488. You A. Accept the model, because p>0.05. B. Accept the model, because p<0.05. C. Reject the model, because p>0.05. D. Reject the model, because p<0.05.
Q5. Leg feathering in chickens is a polygenic trait? A hybrid cross of two chickens with leg feathering produces 15 chicks with and 1 chick without leg feathers. What is the ratio of feathered and non-feathered chicks in the corresponding test cross? A. 1:1. B. 1:1:1:1. C. 9:3:3:1. D. 15:1. E. 3:1.
Q. Antoon van Leeuwenhoek was a(n) A. Pre-formationist. B. Blender. C. Lamarckist. D. Spermist. E. Ovist.
Q. Inheritance of acquired traits is called A. Pre-formationism. B. Blending. C. Spermists. D. Ovists. E. Lamarckism.
Q. Weissman cut the tails of successive generations of mice to disprove A. Pre-formationism. B. Blending. C. Spermism. D. Ovism. E. Lamarckism.
Q. How many genotypically different gametes are formed by AaBbCc? A. 1. B. 2. C. 4. D. 6. E. 8.
Q. What are the gametes produced by AaBb? A. A, B, a, b. B. AA, Aa, aa, BB, Bb, bb. C. AB, Ab, aB, ab. D. A-B-, A-bb, aaB-, aabb.
Q. In turnips, shape is a trait with incomplete dominance between alleles. If a cross between a long and a round turnip yields all oval offspring, the number of alleles is A. 1. B. 2. C. 3.
Q. If a single trait cross yields three different phenotypes, there must be _______ dominance between the alleles. A. complete. B. incomplete C. co- . D. Mendelian. E. Reduction.
Q. A cross resulted in 27 straight-black and 9 curly-red pups. The genotype of the parents is A. AaBb x AaBb. B. AA x aa. C. Aa x aa. D. Aa x Aa. E. Aa x aa.
Q. The distance red kangaroos of a population jump forms a bell-shaped curve. Distant jumped is a A. Dominant trait. B. Co-dominant trait. C. Polymorphic trait. D. Mendelian trait. E. Polygenic trait.
Q. Traits that have more than two alternative forms are called A. Polygenic. B. Polymorphic. C. Polyarchic. D. Polyarthritic. E. Polyphenic.
Q. The cross that yields half of the offspring with the parental and half with the heterozygous phenotype is A. AA x aa. B. AA x Aa. C. Aa x Aa. D. aa x aa. E. Aa x bb.
Q. In horses, a chestnut stallion and a white mare have a roan foal. Between the coat color alleles there is A. Complete dominance. B. Polygenic dominance. C. Polymorphic dominance. D. Incomplete dominance. E. Co-dominance.
Q. If the alleles of a trait are co-dominant what is the df of the corresponding 2 test? A. 1. B. 2. C. 3.
Q. How many terms are there in 2 of a monohybrid cross with incomplete dominance between the alleles? A. 1. B. 2. C. 3. D. 4. E. 5.
Q. A true-breeding plant is one that A. Produces offspring that are different from the parents. B. Forms hybrid offspring through cross pollination. C. Produces offspring that are always the same as the parents. D. Can only reproduce with itself. E. Produces offspring that never lie.
Q. A true-breeding plant is one What property distinguishes Mendel s investigation from previous studies? He A. Used true-breeding pea plants. B. Quantified his results. C. Examined many different traits. D. Examined the segregation of traits. E. As amonk, he prayed a lot.
Q. Alternative forms of genetic information for a trait are called A. alleles. B. Genes. C. Factors. D. Heterozugotes. E. Diploids.
Q. When Mendel crosses yellow and green peas all the offspring were yellow. What was actually transmitted from parents to offspring? A. B. A fluid called a gemule . Similarity in appearance, size and other features. Specialized cells of different organs and structures of the parent plants. Yellow and green pigment. Encoded information that determines the potential to develop pea color. C. D. E.
Q. A An organisms ____ is determined by its _______ A. Allelotype; genotype. B. Genotype; phenotype. C. Genotype; allelotype. D. Phenotype; genotype. E. Allelotype; phenotype.
Q. Which of the crosses produces progeny of the recessive phenotype? A. Ww x WW. B. WW x ww. C. WW x Ww. D. WW x WW. E. Ww x Ww.
Q. The shape of radishes may be long, round, or oval. A cross between long and round radishes produces oval offspring. The phenotypic ratio of the offspring of a cross between two oval-shaped parents is A. 1 round: 2 oval: 1 long. B. 1 long: 2 round: 1 oval. C. 1 round: 2 long: 1 oval. D. 3 long: 1 round. E. 2 oval: 2 round.
Q. The coat color of the rabbit can be black, brown, gray, silver, himalayan, or albino. Of the coat color trait any given rabbit may have as genotype A. None of the different alleles. B. A single allele. C. Only 2 of the different alleles. D. Any combination of 1, 2, or more of the different alleles. E. All the different alleles.
Q. If two individuals heterozygius for two genes are crossed, this would be called a A. Double zygote cross. B. Hybrid cross. C. Test cross. D. Dihybrid cross. E. F1 cross.
Q. The observable outward manifestation of the genes of an individual is referred to as its A. Genotype. B. phenotype. C. archetype. D. idiotype. E. Morphotype.
Q. Co-dominance reflects the interaction between alleles of A. A single trait. B. Different traits. C. Many traits. D. Dominant traits. E. Recessive traits.
Q. Whereas organisms are _____ their gametes are _____. A. Diploid; polyploid. B. Polyploid; haploid. C. Polyploid; diploid. D. Diploid; haploid. E. Big, small.
Q. By shopping off the tails of several generations of mice, August Weismann dispelled with the _______ theory. A. Inheritance. B. Preformationism. C. Ovism. D. Evolution. E. Lamarckism. F. Blending. G. Mendel.
Q. What is the probability that an offspring of a trihybrid cross will have the phenotype aqaB-cc? A. 3/64. B. 9/16. C. 1/64. D. 5/12. E. 27/64.
Q. A phenotype that shows continuous variation among the individuals of a population is called A. Polymorphic. B. Polygenic. C. Polyploid. D. Dominant. E. Pleiotrophic.
Q. If a population contains 75 short-haired and 25 long-haired cats, the frequency of the recessive allele (long-hair) of the parents is A. 0.75. B. 0.25. C. 0.50. D. 0.05. E. 1.00.
Q. In hamsters black is dominant over brown. Allele frequency of black is 0.4 and of brown is 0.6. How many brown animals do you expect in next year s population of 100 animals? A. 16. B. 36. C. 60. D. 84. E. 75.
Q. In hamsters black is dominant over brown. Allele frequency of black is 0.4 and of brown is 0.6. How many black animals do you expect in next year s population of 100 animals? A. 16. B. 36. C. 60. D. 84. E. 75.
Q. You have compared the phenotypic ratio of the offspring to that predicted by a dihybrid cross. You calculated P>0.05. P is the probability A. With which the dihybrid model by chance alone correctly explains the cross. That you are correct by chance alone when you accept the results of the test. Of obtaining a dominant phenotype in a dihybrid cross. With which observed and predicted number of phenotypes differ by chance alone. Of obtaining by chance alone a chi-square value such as you calculated between observed and predicted values. B. C. D. E.
