Question

which term best fits the following description: when two chromosomes physically overlap and exchange chromosome material.
a. crossing over
b. nondisjunction
c. deletion
d. insertion

Explanation:

Crossing - over is the process where two chromosomes physically overlap and exchange chromosome material during meiosis. Nondisjunction is the failure of chromosomes to separate properly during cell division. Deletion is the loss of a segment of a chromosome. Insertion is the addition of a segment of a chromosome into another chromosome.

Answer:

A. Crossing over