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Genetic 342 A&B

Kenneth G Wilson

Professory of Botany

Sex

Relationship between Sex and Heredity

There are three important points to keep clear in the relationship between sex and heredity.

Sex linkage is the fourth choice in genetic proposals .
What is first, second, and third?

Genetics is no respecter of persons .

Where did the term "Blue Blood" come from?

Testicular feminization relating to insensitivity to androgens

What are the significant differences between males and females?
How can you determine the difference between males and females?

 What is a Barr body?

What is a calico cat ?

X-inactivation

Human sex-linked anhidrotic ectodermal dysplasia (absence of sweat glands).

Why do female cats, humans, and possibly other mammals have one of their chromosomes inactivated?

Hairy Ears is a holandric trait

oliver

This is our friend Oliver the parrotlet,

Oliver is a true parrot,

the smallest in the world.