17. Bob says that a sex-linked trait is when only men get the trait (or, when only women get the trait). What do you say to Bob?

1. What is the sex of a pigeon and the crest of a pigeon a product of? 2. What is the THREE letter code for the twisted-ladder chemical that holds genes? How did our PARENT'S genes (genetic information) for eye color, hair color, and other things get to us? 3. 4. How many copies of EACH gene does an individual (pigeon or person) usually INHERIT? What TYPE of GENES or ALLELES do pigeons have for their crests, what can the CRESTS (hair on their head) look like? 5. 6. What are ALLELES? What are the ALLELES for PIGEON CRESTS? 7. What are the LETTERS called we use for a particular GENE?

What do you think that means about the frequency of X-Linked Traits in people who arebiologically XY?

Brown eyes are dominant over blue eyes. This is NOT a sex linked trait. Cross a brown eyed Color blind male (whose mother had blue eyes) with a normal blue eyed female (whose father was colorblind)

5. What is one dil sex-linked trait: