In Maize, Some Alleles at the Seed Coat Locus Influence

question 13

Multiple Choice

In maize, some alleles at the seed coat locus influence our ability to visually determine the endosperm color phenotype. Specifically, an opaque seed coat prevents us from seeing the endosperm within, while we can readily see the endosperm in seeds with transparent coats. The opaque coat color allele thus appears to mask the expression of endosperm color alleles, providing an example of

• A) pleiotropy.
• B) maternal effects.
• C) polygenic inheritance.
• D) codominance.
• E) epistasis.

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Definitions:

Degrees of Competition

The extent to which market competition exists, characterized by the number of firms, product differentiation, and barriers to entry.

Pure Monopoly

A market structure where a single seller controls all of a product's supply and can set prices without competition.

Pure Competition

A market structure characterized by a large number of small firms, a homogeneous product, and easy entry and exit, leading to perfect competitive markets.

Differentiated Oligopoly

A market structure where a few firms dominate, but differentiate their products through branding, quality, or other means to compete.