When Two Loci Are Very Close Together on a Chromosome

question 33

Multiple Choice

When two loci are very close together on a chromosome,

• A) they are linked.
• B) a crossing-over event between them is less likely than when two loci are far apart.
• C) they can blend into a single gene.
• D) both a and b are correct.

---

Definitions:

Evolved Biology

The result of evolutionary processes shaping the genetic, physiological, and anatomical characteristics of organisms over time.

Social Behavior

Actions among individuals, within groups, or towards others, that affect or are influenced by their social environment.

Cognitive Behavior

Refers to the mental processes involved in gaining knowledge and comprehension, including thinking, knowing, remembering, judging, and problem-solving.

Genetically Identical

Having exactly the same genetic makeup. Commonly used to describe organisms that are clones of each other.