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How many chromosomes are there in each daughter cell after mitosis?
There are 46 chromosomes or 23 pairs of chromosomes in each daughter cell after mitosis. Each daughter cells need 46 or 23 pairs of chromosomes to work properly and survive.
Why is it necessary for a cell chromosomes to be distributed to its daughter cell in such a precise manner?
Chromosomes need to be distributed to the daughter cells so precisely because the daughter cells need the the genetic information in the chromosomes. If a chromosome is missing in one of the daughter cells this could prevent the cell from producing a needed protein to survive or something to that effect.
What do chromosomes do before mitosis?
Before mitosis begins, the chromosomes in a cell replicate. This occurs during the S (synthesis) phase. Chromosomes need to replicate so that when the cell divides at the end of mitosis, the daughter cells each recieve a copy of the chromosomes.
Why do chromosomes line up in the middle of the cell during metaphase?
During metaphase, chromosomes line up in the middle of the cell to ensure that they are evenly distributed to the two daughter cells during cell division. This alignment helps to ensure each daughter cell receives a complete set of chromosomes. It also allows for proper segregation of genetic material.
Do gametes have two sets of chromosomes?
No. a normal cell is diploid(2n) number of chromosomes. a normal human cell has 23 pairs of homologous chromosomes which makes 46 chromosomes. during meiosis 1 the homologous chromosomes randomly segregate along the equator and seperature into 2 daughter cells. during meiosis 2, the sister chromatids of the chromosome split in both of the daughter cell creating 4 daughter cells containign haplod (n) number of chromosomes - in humans they will have 23 chromosomes. gamete need to have half the number of chromosomes to a normal cell as when it fuses with another gamete during fertilization, the orginial 46 chromosome - diploid number will be restored.
Do homologous chromosomes pair in mitosis?
Homologous chromosomes do not pair in mitosis. Mitosis is the process of cell division where a cell duplicates its DNA and splits into two identical daughter cells, so the homologous chromosomes do not need to pair up like they do in meiosis.
What is process of cell division by mitosis?
Mitosis is the division of cells. All the cellular contents get dived up between the two daughter cells, and the DNA is duplicated and then separated into both cells, so that both daughter cells have identical copies of DNA. This is different from meiosis which is how gametes (sex cells - sperm and eggs) divide.
What acts as the brain of the cell?
That, my friend, is called the Nucleus. it contains most of the cell's genetic material (DNA) that determines every natural process within an organism. Very fascinating stuff, if you need to know more, Google will be your new best friend. How's biology class going by the way?
How does the nucleus relate to DNA?
The nucleus is the "control center" of the cell. It tells the cell how to function and chromosome development. Chromosomes contain the genetic or hereditary instructions. Chromosomes are both composed of nucleic acids and protein. The nucleic acid in protein is called deoxyribonucleic acid (DNA). DNA is stored in the Nucleus. It is not allowed to leave, for it to be used it must be copied. Short single stranded copies of one of the two DNA strands in the nucleus are made from ribonucleic acid (RNA). these copies represent detailed messages that can be transported out of the nucleus. (as mRNA)
Why is it necessary for a cell's chromosomes to be distributed to its daughter cells in such a precise manner?
Chromosomes need to be distributed to the daughter cells so precisely because the daughter cells need the the genetic information in the chromosomes. If a chromosome is missing in one of the daughter cells this could prevent the cell from producing a needed protein to survive or something to that effect.
What is happening when chromosomes attach to spindle fibers?
That would be during metaphase in mitosis and the chromosomes attach to the spindle fibers because each half of the chromosomes need to migrate to the opposite poles. The spindle fibers are temporary but aid in the movement of the chromosomes.
Which cell part directs the activities of the plant cell?
The nucleus controls most of the chemical reactions that go on inside the cell (i.e. what it grows into, what chemicals it releases, what happens in the cytoplasm and how fast etc). The cell membrane controls what goes in and out of the cells.
