Researchers Found That a Certain Species of Sea Slug, Elysia

question 6

Multiple Choice

Researchers found that a certain species of sea slug, Elysia chlorotica, has in its genome a gene for repairing and maintaining chloroplasts.The gene is identical to one found in the algae from which the slugs steal chloroplasts for performing photosynthesis during periods of dietary shortfall.How did the slugs get the gene?

• A)through vertical gene transfer
• B)through horizontal gene transfer
• C)through diagonal gene transfer

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Definitions:

Thalamus

A brain structure that acts as a relay center, conveying information between different areas of the brain.

Sexual Response

A sequence of physical and emotional changes that occur as a person becomes sexually aroused and participates in sexually stimulating activities.

Hormonal Control

Hormonal control involves the regulation of bodily functions through the secretion and action of hormones, which are chemical messengers produced by endocrine glands.

Testosterone

A steroid hormone predominantly produced in males that plays key roles in muscle and bone mass development, and the production of sperm.