It can be challenging to distinguish different forms of genetic inheritance. Con

Question

It can be challenging to distinguish different forms of genetic inheritance. Consider a fish that exhibits different phenotypes in the stripping pattern on its body. The character is controlled by a single gene, with only two alleles, SB and SY.

One parent is homozygous for one of the alleles for this gene, SB, and exhibits a phenotype in which two vertical blue stripes are present. The second parent is homozygous for the other allele for this gene, SY, but they exhibit two yellow vertical stripes.

What is your prediction for the phenotype of the offspring of these fish if the gene is

Explanation / Answer

Genotype of one of the parent fish with two vertical blue stripes is SBSB and genotype of the second parent fish with two vertical yellow stripes is SYSY. The genotype of the gametes produced and that of the offspring is represented in the Punett

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