Recalling your knowledge of epistasis based on the coat colour in Labrador retriever; find out the coat colour with genotype Bbee.
Correct answer: A. Black
- A. Black
- B. Chocolate
- C. Yellow
- D. White
Explanation
In Labrador retrievers, the genotype Bbee would result in a black coat color. This is because the "B" allele determines black coat color dominance over the "b" allele, while the "e" allele masks the expression of any other coat color genes, including chocolate (bb). Therefore, the dog would have a black coat despite carrying the recessive "b" allele for chocolate.
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About Mendel's Laws of Inheritance
Mendelian inheritance explains how alleles separate into gametes and assort during reproduction, producing predictable genotype and phenotype ratios. Questions cover dominance, recessiveness, homozygous and heterozygous conditions, the laws of segregation and independent assortment, monohybrid and dihybrid crosses, test crosses and the limits caused by linked genes.
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