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Non Mendelian Genetics Foldable

Learn about non-Mendelian genetics with this informative foldable. Explore concepts such as codominance, incomplete dominance, multiple alleles, epistasis, polygenic traits, gametes, autosomes, and sex-linked disorders.

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Non Mendelian Genetics Foldable

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  1. Non Mendelian Genetics Foldable

  2. 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 1st flap on the right side Multiple Alleles, label the 2nd flap Epistasis, 3rd flap Autosomes and the 4th flap Sex-Linked Non-Mendelian Genetics

  3. 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!

  4. 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

  5. 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.

  6. 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

  7. 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

  8. Gametes • Write the following under the gamete flap • Gametes are sex cells, they have ½ 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

  9. 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

  10. 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

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