Non-Mendelian Genetics Foldable
Explore the world of non-Mendelian genetics through a hands-on foldable activity. Learn about codominance, incomplete dominance, multiple alleles, epistasis, polygenic traits, gametes, and more in a visually engaging manner. Understand how traits are inherited and expressed in ways beyond traditional Mendelian genetics.
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Presentation Transcript
Fold your paper so you have 2 flaps opposite each other Next cut four divisions on each side. You should have a total of 8, four on each side. Label the left side: CoDominance, Incomplete Dominance, Polygenetic, Gametes, Label the 1stflap on the right side Multiple Alleles, label the 2ndflap Epistasis, 3rdflap Autosomes and the 4thflap Sex-Linked Non-Mendelian Genetics CoDominance Multiple Alleles Incomplete Dominance Epistasis Polygenetic Autosomes Gametes Sex-Linked
Codominance Under the codominance flap write: Both alleles contribute to phenotype Normal blood cells x Sickle blood cells = both normal and sickle cell blood. In this case it would be a positive change. People who are carriers for sickle cell disease are protected against Malaria!
Incomplete Dominance On the first flap write: Heterozygous phenotype is halfway in between the two homozygous phenotypes Red flower x white flower = pink flower!!! RR X WW = RW
Multiple Alleles Under the first flap write: Many genes have MORE than two alleles Human blood type (A, B, O) Blood type is written with the letter I to represent A and B which are codominate and i to represent O which is recessive.
Epistasis Under the 2nd flap write: the effect of one gene is dependent on the presence of one or more 'modifier genes', i.e. the genetic background
Polygenic Traits Under the polygenic flap write: Traits produced by interaction of more than one gene Human skin color and height Always makes a bell shaped curve
Gametes Write the following under the gamete flap Gametes are sex cells, they have the number of chromosomes as autosomes (23 instead of 46) Male gamete sperm Female gamete egg The gene for sex if on the Y chromosome so the Male decides the sex of the baby. 50 to 50 chance of having a male or female XX or XY
Autosomes Under the flap write The other 22 pair of chromosomes Carry information about everything else except sex Autosomal mutations are not passed to offspring. Ex. skin cancer
Sex linked disorders Under the flap write: Sex link traits are traits carried on the X chromosome. Males have a 50 percent chance of inheriting a sex linked disorder. Females have a 25 percent chance. Examples: color blindness, hemophilia, muscular dystrophy
