You Are Trying to Improve Growth in an Economically Important

question 32

Multiple Choice

You are trying to improve growth in an economically important fish species.These fish have a gene that controls their size.There are two size alleles;L and S.You cross a large female (LL) with a small male (SS) and get all large fish! The genotypes of the F₁ are 100% LS so you assume that large size is dominant to small.You then cross a small female (SS) with a large male (LL) and get all small fish! The genotypes of this F₁ are all LS.How do you explain this result?

• A)The gene for large size is a maternal effect gene.
• B)L is not dominant to S.
• C)The gene for large size is a sex-linked gene.
• D)L is dominant to S.
• E)The gene for large size is a maternal effect gene and L is dominant to S.

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Definitions:

Simple Interest

A method of calculating interest where the charge is based on the original principal amount alone, without compounding.

Interest

Interest is the cost of borrowing money, typically expressed as a percentage of the principal amount.

Rate Of Interest

The percentage of principal charged by the lender for the use of its money.

Equivalent

Equal in value, amount, function, meaning, or the like.