Problem 2:In horses, black coats and trotting gait are dominant while the recessive alleles are white and pacing gait. If the male is homozygous for both dominant traits, what is the genotype of the male? Regarding a cross between the homozygous male with the homozygous recessive female. What are the phenotypes and their ratio in the F1 and F2 generations?

Name: Problem 2:In horses, black coats and trotting gait are dominant while
Uploaded: 2024-03-20T06:43:04.000Z
Channel: Bartleby
Description: Problem 2:In horses, black coats and trotting gait are dominant while the recessive alleles are white and pacing gait. If the male is homozygous for both dominant traits, what is the genotype of the male? Regarding a cross between the homozygous male

As the back coats and trotting gait are dominant, let us take them as B and T. 1. Since the male is homozygous for both dominat alleles, it's genotype is BBTT. 2. The recessive female's genotype is bbtt. All of the progeny in the F1 generation share the same genotype BbTt and same phenotype (black coats with trotting gait). This is due to the heterozygous recessive nature of the female and the homozygous dominant nature of the male. Therefore, the recessive trait will be inherited but not manifest in the F1 progeny's phenotype. Now, for obtaining F2 generation, we self cross F1 generation. Results will be that of a dihybrid cross with phenotype ratio of 9:3:3:1 9 Black coat with trotting gait. 3 Black coat with pacing gait. 3 White coat with trotting gait. 1 White coat with pacing gait.