In Rabbits,there Is a Gene That Controls Ear Length,with a Dominant

question 31

Multiple Choice

In rabbits,there is a gene that controls ear length,with a dominant allele "T" for long ears and a recessive allele "t" for short ears.At another gene locus,there are alleles "B" for black coat and "W" for white coat.Neither the B or W allele is dominant,and BW produces a gray coat.These two allele pairs assort independently.If a gray rabbit that is heterozygous at the gene locus controlling ear length is mated with a white rabbit that is also heterozygous at the gene locus controlling ear length,what is the probability that their first offspring will be gray with long ears?

• A)1/16
• B)3/16
• C)1/8
• D)3/8
• E)1/2

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Definitions:

Underground Stem

Also known as a rhizome, it's a type of stem that grows horizontally beneath the soil surface, often storing nutrients and producing new shoots.

Drupe

A type of fruit with a single seed or pit, surrounded by a fleshy outer part, examples include peaches, cherries, and plums.

Seed Coat

The outer protective layer of a seed that surrounds the embryo and provides defense against physical damage and disease.

Aggregate

A whole formed by combining several elements; often used to describe composite materials or sum totals in statistical analysis.