Question

drag and drop the correct answer for each question.

1. crossing-over of parts of

chromosomes:
a. has no effect on genetic linkage
b. usually decreases the number of
genetic combinations
c. can increase the number of genetic
combinations
answer:

1. crossing-over resulting in the

inheritance of altered chromosomes
by children occurs:
a. during mitosis
b. during meiosis
c. both a and b
answer:

c a
b
chromatydv

Explanation:

1. Crossing-over swaps genetic material between homologous chromosomes, creating new allele combinations, so it increases genetic combinations.
2. Crossing-over occurs during prophase I of meiosis (gamete formation), not mitosis (somatic cell division).

Answer:

1. c. can increase the number of genetic combinations
2. b. during meiosis