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Sex Determination Sex-Linked Traits

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Sex Determination Sex-Linked Traits

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    1. Sex Determination & Sex-Linked Traits Red-green colourblindness Hemophilia Duchenne muscular dystrophy

    2. What is the difference between an Autosome and a Sex-chromosome? Autosomes are the first 22 homologous pairs of human chromosomes that do not influence the sex of an individual. Sex Chromosomes are the 23rd pair of chromosomes that determine the sex of an individual

    3. Sex Determination: How many chromosomes do humans have? How many of these are sex chromosomes? Which parent determines the sex of an offspring? Are there any traits/conditions that are more common in one sex than the other?

    4. Sex Chromosomes:

    5. Sex-Linked Traits:

    6. Hypertrichosis Human Werewolf Syndrome:

    7. Why do males go bald???

    8. Colourblindness Self Test:

    9. Hidden Shapes:

    11. Writing Sex-linked genotypes:

    12. More practice:

    13. Another one. A man with normal vision marries a woman who is a carrier for colour blindness. What are the possible genotypes and phenotypes of their children.

    14. Just one more. A hemophiliac man marries a woman who is a carrier for the disease. What are the possible geno/phenotypes of their children? Should they even consider having children?

    15. Practice problems: Try this quiz on Sex-linked genes http://www.ksu.edu/biology/pob/genetics/xlinked.htm Complete the problem set on sex-linked traits http://www.biology.arizona.edu/mendelian_genetics/problem_sets/sex_linked_inheritance/sex_linked_inheritance.html Write your answers out include the punnett squares that are necessary to figure the answer out!

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