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Albinism (without melanin pigmentation) is a recessive trait. A man and woman who both have normal pigmentation have one child out of three who has albinism. What are the genotypes of this child's parents?

Both parents must be heterozygous

✅

One parent must be homozygous dominant; the other parent must be heterozygous

❌

One parent must be homozygous for the recessive allele; the other parent can be homozygous dominant, homozygous recessive, or heterozygous

❌

One parent must be heterozygous; the other parent can be homozygous dominant, homozygous recessive, or heterozygous

❌

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Which of the following statements is correct in describing the terms monohybrid cross and dihybrid cross?

A monohybrid cross results in a 9:3:3:1 ratio, whereas a dihybrid cross gives a 3:1 ratio

A monohybrid cross involves a single parent, whereas a dihybrid cross involves two parents

A dihybrid cross involves organisms that are heterozygous for two characters that are being studied, and a monohybrid cross involves organisms that are heterozygous for only one character being studied

A monohybrid cross is performed for one generation, whereas a dihybrid cross is performed for two generations

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During which of the following processes does independent assortment of chromosomes occur?

in mitosis and meiosis II

in mitosis and meiosis I

in meiosis II only

in meiosis I only

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For a single gene, how many alleles do you get from each parent:

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