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In prophase, there are 46 condensed chromosome pairs. The chromosomes replicated during S phase (Doubling the original 23 pairs) and now appear as two sister chromatids connected via the centromere. During metaphase, the kinetochores of the chromatids attach to the spindle fibers and the chromosomes have now moved into position along the metaphase plate (an imaginary division) and are roughly central in the cell. During anaphase the spindles begin pulling the chromatids apart from one another and telophase begins. During telophase, the nuclear envelopes of the cells to be forms. At this point it's a tad murky as the chromosomes are clearly separated but the cell has not yet made a complete divide. The division completes during cytokinesis beginning with the formation of a cleavage furrow will separate the cytoplasm and eventually yields two daughter cells. At this point the cell will have 23 chromosome pairs.
The above is only true if we are talking about a somatic cell. If we are talking about a sex cell i.e a sperm or an egg then after the first meiotic division, there will be another one that follows the same processes as the first, only this time without the luxury of having undergone the replication during S phase and as such once cytokinesis finishes there will only be 23 single chromosomes in the given sex cell.
During prophase, there are 46 chromosomes present, consisting of 23 pairs. In metaphase, all 46 chromosomes are lined up at the equator of the cell. By telophase, the chromosomes have separated into two identical sets, with 46 chromosomes in each daughter cell.
When the chromosomes duplicate themselves, each duplicate chromosome exists as a pair of sister chromatids. There are 46 pairs of sister chromatids, which means there are a total of 92 individual chromatids (chromosomes) in metaphase. During metaphase the 46 pairs of sister chromatids line up along the cell's equatorial plane and in telophase, one sister of each chromatid pair separates into two separate daughter cells. Now each cell will have 23 pairs of chromosomes, for a total of 46.
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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 phase of mitosis contains four chromosomes as its diploid or 2 number?
The phase of mitosis that contains four chromosomes is metaphase. During metaphase, the chromosomes line up along the metaphase plate in the center of the cell, with their centromeres attached to the spindle fibers. Each chromosome consists of two chromatids, so a total of four chromatids are present.
During which phase of the cell cycle are duplicated chromosomes present?
The S phase in the interphase. Chromosomes are copied in the interphase part of the cell cycle S phase would be the answer. It is during Interphase (G1, S, G2) that they are copied. SO dependant on your answers it's either interphase or S.
In a diploid cell in which 2n equals 14 how many telomeres are there in each of the follow phases of the cell cycle a. G1 b. G2 c. mitotic prophase d. mitotic telophase?
a. In G1 phase, there are 14 telomeres present. b. In G2 phase, there are 14 telomeres as well. c. In mitotic prophase, there are 28 telomeres, as the chromosomes have replicated. d. In mitotic telophase, there will be 28 telomeres as the cell prepares to divide.
How many chrosomes will be present in each cell at late telophase?
At late telophase, the chromosome copies have separated at opposite ends of the cell, and nuclear membranes begin to reform around each set of chromosomes. Each new nucleus will contain the full number of chromosomes for that species, which is the same as the original cell before division.
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.
Spindle fibers are present in what stage of mitosis?
Spindle fibers are present in both prophase and metaphase stages of mitosis. In prophase, the spindle fibers start to form and separate the duplicated chromosomes. In metaphase, the spindle fibers attach to the centromeres of the chromosomes and align them along the cell's equator.
What are the phases present in mitosis?
Interphase (commonly not used but still important to mitosis), prophase, prometaphase (sometimes not used, but in higher education it is used because metaphase is so long), metaphase, anaphase, telophase/cytokinesis.
What happens to cell membranes during cell division?
During prophase the nuclear membrane disintegrates. The metaphase through anaphase the molecules are not formed as membranes. During telophase it reintegrates and in interphase it is present as normal.
How many sets of replicated chromosomes are present in each cell at the end of telophase you?
At the end of telophase, there are two sets of replicated chromosomes present in each cell. This is because during telophase, the duplicated chromosomes have separated and two identical sets of chromosomes are formed in preparation for cytokinesis.
What phase of mitosis contains four chromosomes as its diploid or 2 number?
The phase of mitosis that contains four chromosomes is metaphase. During metaphase, the chromosomes line up along the metaphase plate in the center of the cell, with their centromeres attached to the spindle fibers. Each chromosome consists of two chromatids, so a total of four chromatids are present.
During which phase of the cell cycle are duplicated chromosomes present?
The S phase in the interphase. Chromosomes are copied in the interphase part of the cell cycle S phase would be the answer. It is during Interphase (G1, S, G2) that they are copied. SO dependant on your answers it's either interphase or S.
In a diploid cell in which 2n equals 14 how many telomeres are there in each of the follow phases of the cell cycle a. G1 b. G2 c. mitotic prophase d. mitotic telophase?
a. In G1 phase, there are 14 telomeres present. b. In G2 phase, there are 14 telomeres as well. c. In mitotic prophase, there are 28 telomeres, as the chromosomes have replicated. d. In mitotic telophase, there will be 28 telomeres as the cell prepares to divide.
How many chrosomes will be present in each cell at late telophase?
At late telophase, the chromosome copies have separated at opposite ends of the cell, and nuclear membranes begin to reform around each set of chromosomes. Each new nucleus will contain the full number of chromosomes for that species, which is the same as the original cell before division.
How many chromosomes are present during prophase?
23 pairs. So 46.
How many chromosomes are present at the end of telophase I?
You must first understand that the cells of different organisms contain different amounts of chromosomes. Humans contain 46. However, during interphase, a cell grows, prepares for mitosis, and doubles its chromosomes. That means 92 chromosomes are present at the end of mitosis. They are still attached (there are 46 pairs of chromosomes that do not split until anaphase).
Does metaphase of mitosis meiosis 1or meiosis2 have the haploid number of chromosomes at the equator of the spindle?
In metaphase of meiosis 1, the haploid number of chromosomes is present at the equator of the spindle. Each chromosome is made up of two chromatids.
