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When are cells haploid but the chromosomes are still in the duplicated state?
my college bio proffessor told me that even though chromosomes are still in the duplicated state, the chromosomes are duplicated so technically they do have "23" chromosomes but they instead have 2 sets of it. these 2 sets are the same so they dont count as a "full" set of 46 chromosomes. :) hope this helps!!
What contains uncondensed chromosomes that have been duplicated?
The nucleus of a cell contains uncondensed chromosomes that have been duplicated. During the interphase of the cell cycle, before cell division, the chromosomes replicate and form sister chromatids that are still uncondensed and spread throughout the nucleus.
When all the genes of a chromosome have duplicated but are still attached the strutures that are formed are called?
When all the genes of a chromosome have duplicated but are still attached, the structures that are formed are called sister chromatids. Sister chromatids are identical copies of each other, and they are held together at a specialized region called the centromere.
In human cell undergoing mitosis how many chromosomes are present in prophase in metaphase in telophase?
In prophase, there are 46 chromosomes present, which are duplicated sister chromatids. In metaphase, there are still 46 chromosomes, but they are aligned along the metaphase plate. In telophase, the chromosomes have separated and there are once again 46 individual chromosomes in each daughter cell.
What are the two distinct of meiosis?
I think what you are asking is "What are the two distinct processes of meiosis?"At the beginning of meiosis, there is a diploid cell (chromosomes come in pairs) with duplicated chromosomes (each pair of chromosomes is duplicated). The cell undergoes two processes: Meiosis I and Meiosis II.Meiosis I produces two haploid cells (unpaired chromosomes), but the chromosomes are still duplicated. These two cells then undergo Meiosis II, in which the two haploid cells are split, with one set of unpaired chromosomes going to one and the other set of unpaired chromosomes to the other. The end result of Meiosis II is four haploid cells with unduplicated chromosomes.In short, when a cell undergoes the complete process of meiosis, a single diploid cell with duplicated chromosomes is turned into four haploid cells with unduplicated chromosomes.For a complete description of all the steps along the way, see this page and scroll down about 2/3 of the way: http://en.wikibooks.org/wiki/Adventist_Youth_Honors_Answer_Book/Health_and_Science/Heredity
What is the purpose of DNA replication.?
DNA replication is a necessary preliminary step for cell division, for both meiosis and mitosis. It creates the 2 chromatids that are found in chromosomes that are preparing to divide. By this process, the whole chromosome is essentially duplicated, but is still held together by a common centromere.
How many chromosomes were there per cell after telophas 1?
After telophase I of meiosis, each cell has half the number of chromosomes compared to the original diploid cell. Specifically, if the original cell had 46 chromosomes (in humans), each daughter cell will have 23 chromosomes. However, these chromosomes are still in replicated form, meaning each consists of two sister chromatids. Thus, while the chromosome count is halved, the genetic material is still duplicated.
What are the chromosomes called during interphase?
Chromatin. The loose and, basically unwound form of chromosomes that are still wrapped is histones.
How many chromosomes are present right after meiosis 1?
After meiosis I, each daughter cell contains half the number of chromosomes as the original cell, but each chromosome consists of two sister chromatids. In humans, for example, the original diploid cell has 46 chromosomes, so after meiosis I, each of the two resulting haploid cells will have 23 chromosomes, each still in the form of a duplicated structure.
Why are the cells at the end of meiosis not ready to act as gametes?
The cells at the end of meiosis are not yet ready to act as gametes because they are haploid, meaning they only have half the chromosome number needed for fertilization. These cells need to undergo one more round of cell division, called cytokinesis, to become functional gametes with a full set of chromosomes.
What important event occurs to chromosomes during interphase?
An important event that occurs during interphase is chromosome duplication (the uncoiling of the DNA). This prepares the cell for cell division as the cells are still growing during interphase.
Why is it important the the number of chromosomes is reduced when gametes are formed?
poo come out the bum
