Selection Can Maintain Variation Within Populations If Heterozygotes

question 48

Multiple Choice

Selection can maintain variation within populations if heterozygotes

• A) are excluded from the population by environmental factors.
• B) are increased in number by fixation.
• C) mutate into homozygotes at the same rate as they form.
• D) have higher fitness than either of the two homozygotes for a given gene.

---

Definitions:

Actinopterygii

Actinopterygii, commonly known as ray-finned fishes, constitute a class of bony fishes characterized by the radiating structure of their fins, which are supported by bony spines.

Flexible Fins

Adaptations in aquatic organisms allowing for maneuverability, stability, and propulsion in water.

Temporal Openings

Temporal Openings are large gaps or spaces in the skulls of some vertebrates, allowing for the attachment of jaw muscles thus facilitating movement and strength.

Spiny Echidnas

Egg-laying mammals native to Australia and New Guinea, known for their spines and elongated snouts.