Just 5 6 7

Ss
55
S 55
Heredity Pattern: Sex-Linked
5
15s
5. If a trait is always transmitted from
a father to all his sons and from these sons to all their sons, etc., but is never
found in the daughters, what chromosome would the gene for this character most likely be found?
6. In man, color-blindness is due to a sex-linked recessive gene. A normal vision woman (whose father was color-
blind) marries a normal vision man. What will the children's vision be like?
7. One form of muscular dystrophy is transmitted by the sex-linked pattern (X). Could a couple have a male child
with muscular dystrophy if the mother carries the trait but the father is normal? (MD is recessive)