HEREDITY
MONOHYBRID CROSS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Brown
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White
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Speckled
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Spotted
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Detailed explanation-1: -Brown fur is dominant to white fur in a species of rabbit and is represented with the alleles “B” and “b". What are the resulting percentages of genotypes of a cross between a homozygous dominant parent and a heterozygous parent? Explanation: The answer is 50% BB and 50% Bb, as shown in the punnet square below.
Detailed explanation-2: -A rabbit that is heterozygous Bb will be black. Why? Because the B allele is dominant over the recessive b allele, so a rabbit with genotype Bb will have the same coat color phenotype as a rabbit with the dominant homozygous genotype BB.
Detailed explanation-3: -If your rabbit is albino (white coat and red eyes), then the genotype is cc. You will not be able to identify any of the other genotypes based off of the phenotype.
Detailed explanation-4: -Black is the dominant fur color for rabbits and white is the recessive. B stands for the black allele and b represents the white allele. A white rabbit would have a genotype of bb and a black rabbit could have a genotype of BB or Bb.