Respuesta :
Answer:
Bb
Explanation:
If you use "b" to represent golden allele and "B" to represent the black allele, then crossing a Bb and bb dog will result in a 50/50 chance of they offspring being black or golden. Since half of the litter is black and the other half is golden, the black colored dog has a Bb genotype.
An allele is the alternative of the genes present for a character or a trait. The genotype of the black dog will be Bb.
What is a genotype?
A genotype is a genetic information contained in a cell that passes from generation to generation.
The allele of golden-colored dog = b
The allele for black-colored dog = B
The genotype of the black and the golden litters are 1:1 or 50% each as 4 puppies are black and another 4 are golden.
If the parents having Bb and bb are crossed then only there is a chance that the 50% offspring will be black and golden. For an offspring to be 50% black the genotype of the parent must be heterozygous.
Therefore, the genotype of the black dog will be Bb.
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