AP BIOLOGY

HEREDITY

NONDISJUNCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In humans, mitosis produces ____ chromosomes and ____ chromosomes after Meiosis
A
46, 46
B
92, 46
C
46, 23
D
23, 23
Explanation: 

Detailed explanation-1: -When the cell divides, the copies are pulled apart, and each new cell gets one identical copy of each chromosome. This type of cell division is called mitosis, and it produces cells with a total of 46 chromosomes.

Detailed explanation-2: -We can think of meiosis as a way cells very carefully count and divide their chromosomes so that each gamete, each egg or sperm, has exactly 23 chromosomes. Then when an egg with its 23 chromosomes is fertilized by a sperm with its 23 chromosomes, the resulting fertilized egg has exactly 46 chromosomes.

Detailed explanation-3: -In human cells, the parent cell has 46 chromosomes (23 pairs), so the cells produced by meiosis have 23 chromosomes. These cells will become gametes. An overview of meiosis.

Detailed explanation-4: -In meiosis, a cell containing the diploid number of chromosomes is converted into four cells, each having the haploid number of chromosomes. In human cells undergoing meiosis, for instance, a cell containing 46 chromosomes yields four cells, each with 23 chromosomes.

There is 1 question to complete.