Question

which example gives information about an organisms phenotype, but not its specific genotype?
a pea plant has the alleles tt for stem height.
a woman is a carrier for colorblindness.
a cat has short fur.
a man has hemophilia.

Explanation:

• A pea plant has the alleles Tt for stem height: This directly gives the genotype (Tt), so it is about genotype, not just phenotype.
• A woman is a carrier for colorblindness: A carrier has a specific genotype (e.g., \(X^{B}X^{b}\) for colorblindness in humans, where \(X^{B}\) is the normal allele and \(X^{b}\) is the color - blind allele). This is information about genotype.
• A cat has short fur: Short fur is a phenotypic trait. The genotype could be \(SS\) (homozygous dominant) or \(Ss\) (heterozygous, assuming \(S\) is the allele for short fur and \(s\) for long fur). We only know the phenotype (short fur) and not the exact genotype.
• A man has hemophilia: Hemophilia in men is typically due to a specific genotype (\(X^{h}Y\), where \(X^{h}\) is the hemophilia - causing allele on the X - chromosome and \(Y\) is the normal Y - chromosome). This is about genotype.

Answer:

C. A cat has short fur.