OBJECTIVE LIFE SCIENCE
CELL BIOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
What is the purpose of crossing-over in meiosis?
|
|
To create mutations in gametes to increase variation
|
|
|
To randomly separate homologous chromosome pairs
|
|
|
To reduce the number of chromosomes in gametes by one half
|
|
|
To create new combinations of alleles on homologous chromosomes
|
Explanation:
Detailed explanation-1: -Explanation: Crossing over is a process that happens between homologous chromosomes in order to increase genetic diversity. During crossing over, part of one chromosome is exchanged with another. The result is a hybrid chromosome with a unique pattern of genetic material.
Detailed explanation-2: -Then, while the homologous chromosomes are tightly paired, the members of each pair trade adjacent bits of DNA in a process called crossing over, also known as recombination (Figure 1). This trading of genetic material creates unique chromosomes that contain new combinations of alleles.
There is 1 question to complete.