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They must reduce their number of chromosomes by half so that way when they do fuse, the two halves of genetic material equal a full cell.

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15y ago

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Why must sperm and egg cells reduce their number of chromosomes before they fuse?

They must reduce their number of chromosomes by half so that way when they do fuse, the two halves of genetic material equal a full cell.


How many chromosomes do you have in cells before and after mitosis?

Before mitosis, cells have a diploid number of chromosomes, which means they have 46 chromosomes in humans. After mitosis, the daughter cells also have a diploid number of chromosomes, so they also have 46 chromosomes.


If the egg cell of a giraffe has 31 chromosomes how many chromosomes will a giraffes heart cell have?

A giraffe's somatic cells, such as heart cells, will also have 31 chromosomes. This is because all cells in an organism's body carry the same set of chromosomes, with the exception of sex cells (gametes) which undergo meiosis to reduce their chromosome number by half.


Why do cells need to copy their chromosomes before they divide into two daughter cells?

They copy their chromosomes so that when they do divide into two different cells each one will have its own set of chromosomes and it couldn't be copied and transferred after divison occured


What is the number of chromosomes before mitosis?

Body cells are the only cells that go through the process of mitosis. So body cells have 46 chromosomes or 23 chromosome pairs. Before the cells separate the chromosomes duplicate and split so that the new cell has an identical DexyriboNucleicAcid.


What types of cells are seen in chromosomes?

Cells are not found in chromosomes. Chromosomes are found in cells.


Chromosomes in animal cells?

Yes there are chromosomes in animal cells. There are also chromosomes in plant cells. :)


Why do cells need to double their chromosomes before mitosis starts?

They are in need of reproduction.


How many chromosomes do cells have when they divide?

Twice the number in the cell. So if the cell normally has 46 chromosomes, such as in somatic human cells, the dividing cell would have 92 chromosomes just before division. With germ cells such as sperm and egg this would be half that. Sperm and egg cells in humans would contain 23 chromosomes and 46 just before division.With N representing the number of chromosomes in an organism:Mitosis (somatic cells) 2N -> 4N division -> 2N


Why does a cell make a copy of itself before it divides?

So that the new cells have the same chromosomes as the parent cells.


What are chromosomes in?

chromosomes are in cells


How many chromosomes are in cells formed during mitosis?

A cell undergoing mitosis has twice the usual number of chromosomes for that species. For example, human body cells have 46 chromosomes, but after DNA replication, which must occur before mitosis, a human body cell will have 92 chromosomes.