For this question, assume that the species is diploid. In a hypothetical species

Question

For this question, assume that the species is diploid. In a hypothetical species of fox, suppose there is a gene that can cause a fox to have a stripe of gray fur down its side. This gene has two alleles, denoted "s" and "s+". Foxes with one or two "s+" alleles have the stripe, and the stripe looks the same whether an individual's genotype is "s+ s+" or "s+ s"; foxes with only "s" alleles have no stripe. Is the "s+" allele dominant or recessive, and why?

Question 19 options:

The "s+" allele is dominant because genotype "s+ s" shows the stripe

The "s+" allele is dominant because genotype "ss" shows no stripe

The "s+" allele is recessive because genotype "ss" shows no stripe

The "s+" allele is recessive because genotype "s+ s" shows the stripe

The "s+" allele is dominant because genotype "s+ s+" shows the stripe

The "s+" allele is dominant because genotype "s+ s" shows the stripe

The "s+" allele is dominant because genotype "ss" shows no stripe

The "s+" allele is recessive because genotype "ss" shows no stripe

The "s+" allele is recessive because genotype "s+ s" shows the stripe

The "s+" allele is dominant because genotype "s+ s+" shows the stripe

Explanation / Answer

Answer: The "s+" allele is dominant because genotype "s+ s" shows the stripe

s+s+ or s+s ----------------stripe

ss ------------------------------no stripe

It is simple as monohybrid cross. If one allele is dominant over the other, the dominant phenotype will be exhibited in heterozygous condition

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