AP BIOLOGY

CELL DIVISION

MEIOSIS

Please wait while the activity loads.
If this activity does not load, try refreshing your browser. Also, this page requires javascript. Please visit using a browser with javascript enabled.

If loading fails, click here to try again

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

What equation represents what happens to the chromosome number during fertilization?

A	n+n=2n
B	n=n
C	2n=n+n
D	2n=2n

Explanation:

Detailed explanation-1: -The n represents haploid condition. It means the cell possesses a half number of chromosomes. For example, in human 23 chromosomes shows n condition. The 2n represents diploid condition. It means the cell possesses two sets of chromosomes.

Detailed explanation-2: -Chromosome number For example, humans are diploid (2n) and have 46 chromosomes in their normal body cells. These 46 chromosomes are organized into 23 pairs: 22 pairs of autosomes and 1 pair of sex chromosomes. The sex cells of a human are haploid (n), containing only one homologous chromosome from each pair.

Detailed explanation-3: -The letter n is used to represent a single set of chromosomes; therefore a diploid organism is designated 2n. Human cells that contain one set of 23 chromosomes are called gametes, or sex cells; these eggs and sperm are designated n, or haploid.

Detailed explanation-4: -Diploid (2n) Cell that contains two sets of homologous chromosomes. Haploid (n) Cell that contains only a single set of genes.

There is 1 question to complete.