In a Very Large Population, a Quantitative Trait Has the Following

question 10

Multiple Choice

In a very large population, a quantitative trait has the following distribution pattern. If there is no gene flow, the curve shifts to the left or to the right, and the population size consequently increases over successive generations, which of the following is most likely occurring?

• A) immigration or emigration
• B) directional selection
• C) disruptive selection
• D) genetic drift

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Definitions:

Simple Cuboidal Epithelium

A type of epithelial tissue consisting of a single layer of cube-shaped cells, typically involved in secretion and absorption.

Portal Triads

are structures in the liver consisting of a bile duct, a branch of the hepatic artery, and a branch of the hepatic portal vein.

Submucosa

The layer of dense irregular connective tissue or loose connective tissue that lies beneath a mucosa, providing it with nutrients and support.

Alimentary Canal

The whole passage along which food passes through the body from mouth to anus, including the esophagus, stomach, and intestines.