In Certain Goat Breeds, Appearance of a Chin Beard Is

question 5

Multiple Choice

In certain goat breeds, appearance of a chin beard is a sex- influenced trait. Recall that bearding is inherited as an autosomal trait determined by two alleles, B1 and B2, and females must be homozygous for the bearded allele, B2, to have a beard. What genotypes must a bearded billy goat (male) and a beardless female goat have if they have a bearded female offspring?

• A) The bearded billy goat must be heterozygous for the bearded allele, while the beardless female must be homozygous for the bearded allele.
• B) The bearded billy goat could be heterozygous or homozygous for the bearded allele, while the beardless female must be homozygous for the bearded allele.
• C) Both the bearded billy goat and beardless female must be heterozygous for the bearded allele.
• D) The bearded billy goat could be heterozygous or homozygous for the bearded allele, while the beardless female must be heterozygous for the bearded allele.
• E) Both the bearded billy goat and beardless female must be homozygous for the bearded allele.

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Definitions:

Midpoint Method

A technique used to calculate elasticity by taking the average of the starting and ending prices and quantities to determine percentage changes.

Income Elasticity of Demand

An indicator of the variability in a product's demand based on shifts in consumer income.

Price Elasticity of Supply

An indicator of the sensitivity of the amount of a product supplied to fluctuations in its price.

Price Elasticity of Supply

A measure of how much the quantity supplied of a good responds to a change in the price of that good, indicating the producers' ability to adjust supply when prices change.