How many chromosomes does human cell have before division?

Answer 1

46

Answer 2

Almost every cell in the human body has 46 chromosomes. All chromosomes can be easily sorted into 23 pairs. Each one has a match by shape and size, and are made up of genes that control the same trait. Biologists named cells which contain chromosomes in pairs as diploid, represented as 2n. A normal chromosome is made up of thousands of genes. They are made up of about 60 percent protein and 40 percent DNA. There is only one type of cell that does not have 46 chromosomes and those are gametes, also called sex cells. The egg and sperm cells only contain 23 chromosomes and are called haploid, represented by n. These gametes have one chromosome for every pair. Gametes must have half the usual number of chromosomes so when the egg and sperm unite to form a new being it will have 46. Cell fusion is not a process that can continue to occur repeatedly. If it did continue, the amount of chromosomes in every cell would become enormous. Early biologists concluded that there must be a process during gamete production that would reduce the number of chromosomes to half the usual amount. Meiosis is the specific process by which reduction division occurs.

Answer 3

It begins with 46 chromosomes until it multiplies, making 92 chromosomes. After mitosis, there are 46 chromosomes in both cells.

Answer 4

It SHOULD have 46. Unless the offspring has ottism, turnersyndrome, and so on. But a normal human shoul dhave 46 in each cell.

Answer 5

You begin with one and end with four.

Answer 6

It begins with 21, but not sure when ends

Answer 7

1 in the beginning and two in the end