Solid Black,black with Tan Belly,and Agouti Coat Color in Mice $\frac { 1 } { 4 }$

question 3

Multiple Choice

Solid black,black with tan belly,and agouti coat color in mice are all caused by alleles of the agouti gene.All three colors can be true-breeding.When using mice from true-breeding strains: (1) Black × Agouti F₁s are all agouti,(2) Black × Black with Tan belly F₁s are all black and tan,and (3) Black with Tan belly × Agouti F₁s are all agouti.If you were to cross the F₁s from (1) with the F₁s from (2) ,what proportion of the resulting offspring would you expect to be black with a tan belly?

• A)None
• B) \(\frac { 1 } { 4 }\)
• C) \(\frac { 3 } { 16 }\)
• D) \(\frac { 1 } { 2 }\)
• E) \(\frac { 1 } { 16 }\)

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Definitions:

Mycelia

Mycelia are the vegetative parts of fungi, consisting of a network of fine, thread-like structures called hyphae.

Ascocarp

The fruiting body of an ascomycete.

Fruiting Body

The reproductive structure of fungi and other plants which releases spores.

Chitin

A long-chain polymer of a glucose derivative, which is a principal component of the cell walls of fungi and the exoskeletons of insects and crustaceans.