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Genotypes and Phenotypes Practice Multiple Choice Test

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Genotypes and Phenotypes Practice

Practice identifying homozygous vs. heterozygous, dominant vs. recessive, and allele symbols.

NOTE: If the question contains an image, clicking on it will enlarge it for easier viewing. If there is a "More Info" link after the question, clicking it will display additional content related to the question.

In cats, long hair is dominant over short hair. What letter would you use to represent the long hair allele?

In cats, long hair is dominant over short hair. What letter would you use to represent the short hair allele?

Which of the following represents a homozygous dominant genotype?

Which of the following represents a heterozygous genotype?

Which of the following represents a homozygous recessive phenotype?

In cats, long hair is dominant over short hair. If a cat has the genotype Ll, what will its phenotype be?

In cats, long hair is dominant over short hair. If a cat's phenotype is short hair, what is its genotype?

In guinea pigs, black fur is dominant over white fur. If a guinea pig's phenotype is black, what is its genotype?

In guinea pigs, black fur is dominant over white fur. If a guinea pig's phenotype is white, what is its genotype?

In guinea pigs, black fur is dominant over white fur. If a guinea pig's genotype is Bb, what will its phenotype be?

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