In Rabbits, There Is a Gene That Controls Ear Length

question 28

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

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Definitions:

Transformation

A genetic alteration in which a cell or organism incorporates and expresses foreign DNA.

Meso-Butane-2,3-Diol

A specific type of butane diol with a meso configuration, meaning it has a plane of symmetry and is optically inactive.

Alkene Starting Material

A specific class of starting materials characterized by having at least one carbon-carbon double bond.

Phenol

An aromatic organic compound with a hydroxyl group (-OH) attached to a phenyl ring, used in the manufacture of plastics and pharmaceuticals.