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Before mitosis or meiosis DNA coils into what?
Before mitosis and meiosis, DNA is loose in the form of chromatin, then it coils into chromosomes right before the mitosis and meiosis.
How do the chromosomes get to the stage of meiosis prophase?
A nucleus is signals the rest of the cell that the cell is ready to undergo meiosis, in which case the chromosomes begin to condense with the help of histones, which is the beginning of prophase I of meiosis.
How many chromosomes are present in the cell after meiosis II?
After meiosis II, each cell will have a haploid number of chromosomes, which means they will have half the number of chromosomes compared to the original cell before meiosis.
The pairing of homologous chromosomes before nuclear division happens in what type of cell division?
The pairing of homologous chromosomes before nuclear division occurs in meiosis. Meiosis is a type of cell division that results in the formation of sex cells (sperm and egg cells) with half the number of chromosomes as the parent cell.
How many chromosomes would a cell have during metaphase 1 of meiosis if it has 12 chromosomes during interphase?
Meiosis is known as a reduction division. The total number of chromosomes present prior to meiosis is reduced in half at the end of meiosis. In this case 12 pairs of chromosomes before meiosis (a total of 24 chromosomes) becomes 12 chromosomes (one of each pair) at the end of meiosis.
What must happen before meiosis can begin?
DNA replicates and forms tetrad—APEX.
Before mitosis or meiosis DNA coils into what?
Before mitosis and meiosis, DNA is loose in the form of chromatin, then it coils into chromosomes right before the mitosis and meiosis.
How chromosomes look before meiosis?
Threadlike
How do the chromosomes get to the stage of meiosis prophase?
A nucleus is signals the rest of the cell that the cell is ready to undergo meiosis, in which case the chromosomes begin to condense with the help of histones, which is the beginning of prophase I of meiosis.
How many chromosomes does an egg of a human female have before meiosis?
23 chromosomes
How many chromosomes are present in the cell after meiosis II?
After meiosis II, each cell will have a haploid number of chromosomes, which means they will have half the number of chromosomes compared to the original cell before meiosis.
The pairing of homologous chromosomes before nuclear division happens in what type of cell division?
The pairing of homologous chromosomes before nuclear division occurs in meiosis. Meiosis is a type of cell division that results in the formation of sex cells (sperm and egg cells) with half the number of chromosomes as the parent cell.
What two things must happen to the sperm before it can fertilize an egg?
Well first the sperm has to be made by meiosis. Then it has to get to the egg and enter it [If you catch my drift.] Then after that the nucleus of both the sperm and the egg disappear and the chromosomes of both join together and a new nucleus forms. This creates a new dipliod cell, or a new organism in other words.
What phase of meiosis is when the chromosomes copied?
Interphase before Prophase I.
Is duplication of paired chromosomes in the first stage of meiosis?
Yes duplication of chromosomes occurs during the first stage of meiosis or during prophase.
How many chromosomes would a cell have during metaphase 1 of meiosis if it has 12 chromosomes during interphase?
Meiosis is known as a reduction division. The total number of chromosomes present prior to meiosis is reduced in half at the end of meiosis. In this case 12 pairs of chromosomes before meiosis (a total of 24 chromosomes) becomes 12 chromosomes (one of each pair) at the end of meiosis.
What is the first thing chromosomes do in meiosis?
In meiosis, chromosomes replicate during interphase before the start of cell division. This process ensures that each daughter cell will receive the correct number of chromosomes.
