AP BIOLOGY

Detailed explanation-1: -The gametes of human cells are haploid, from the Greek haplos, meaning “single.” This term implies that each gamete contains half of the 46 chromosomes-23 chromosomes in humans. When the human gametes unite with one another, the original diploid condition of 46 chromosomes is reestablished.

Detailed explanation-2: -In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells. The number of chromosomes in a single set is represented as n, which is also called the haploid number. In humans, n = 23.

Detailed explanation-3: -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-4: -Every cell in the human body contains 23 pairs of such chromosomes; our diploid number is therefore 46, our ‘haploid’ number 23.

Detailed explanation-5: -In meiosis, the number is halved and we end up with 23 total in each cell. The reason is because in a regular cell, 23 chromosomes come from the mother and the other 23 come from the father. So you need meiosis to divi up the chromosomes so they can add later during reproduction.