Sex Linkage
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4 Terms
Which chromosome pair are the gametes located?
Pair 23
What chromosomes do males and females have?
Male: XY
Female: XX
Why are males more likely to have recessive conditions?
Gene is on the X chromosome, inherited from the mother
They only require 1 copy of the sex-linked recessive allele for expression
There’s no homologous portion on the Y that might contain a dominant allele
Monohybrid cross with sex-linkage: A single gene that's carried on the X chromosome controls the presence of hair on the skin of cattle. Its dominant allele causes hair to be present and its recessive allele causes hairlessness. A male and a female with hair have two hairless female offspring. What is the probability that their next calf born is hairless?
Note 
Flashcards (50)