in rats, the gene that is autosomal and the allele for pink tow pads (T) is domi
ID: 311162 • Letter: I
Question
in rats, the gene that is autosomal and the allele for pink tow pads (T) is dominant over the allele for black tow pads (t). The gene for ear shape is X-linked with the allele for round ears (X^E) is dominant over the allele for pointy ears (X^e). You cross a female rat with pink toe pads and pointy ears to a male rat with black toe pads and round ears. The F1 progeny all have pink toe pads. a. What are the genotypes of parental generation? Female: ? Male: ? b. what is the genotype and phenotypes of the F1 progeny? c. what types of gamete could each of the F1 progeny produce?
Explanation / Answer
Answer
a).
A female rat with pink toe pads and pointy ears=TT XeXe
A male rat with black toe pads and round ears = tt XEY
b).
TT XeXe X tt XEY------parents
F1: Female---Pink toe and round ears(TtXEXe )
Male: Pink toe and pointy ears (TtXeY)
c).
Female (TtXEXe ) progeny produces TXE, TXe, tXE & tXe gametes.
Male (TtXeY) progeny produces TXe,TY, tXe &tY gametes.
t XE tY T Xe TtXEXe (female) TtXeY (male)Related Questions
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