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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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trantruong trantruong
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9 years ago
In Wyandotte poultry rose comb is dominant (R), single comb is recessive (r) A rose combed male is mated with two rose-combed females. female A produces 14 chicks, all rose combed. Female B produces nine chicks, seven of which are rose combed and teo single combed. what are the genotypes of the three parents birds?
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#1
9 years ago
male (Rr)(heterozygous)
female 1 (RR)(homozygous)....all there chicks are rose comb so if fathers recessive gene is given it will never be expressed as there is only one recessive gene between the two

female 2 (Rr)(heterozygous)....when these two birds are crossed there is a one in four chance the chick will be single comb so since it was done nine times there is 7 rose combed and 2 single combed
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