a chicken cell undergoes meiosis how many chromosomes are in each cell?
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The number of chromosomes is reduced from 46 (23 pairs) to 23 during the process of meiosis. Because they have only half the total chromosomes in a somatic cell, they are termed haploid (n). In a human egg or sperm, there are 23 chromosomes, one of which is an X or Y.
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Anaphase I: Homologues separate; sister chromatids remain attached. Summary: At the end of meiosis, 4 daughter cells are formed = eggs or sperm. Each contains half as many chromosomes as the parent cell (n); each cell is genetically different from its parents and from its "siblings".
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Chickens have a diploid number of 78 (2n = 78) chromosomes, and as is usual in birds, the majority are microchromosomes.
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Telophase II and Cytokinesis In humans, meiosis produces genetically different haploid daughter cells, each with 23 chromosomes that consist of one chromatid. These haploid cells become unfertilized eggs in females and sperm in males.
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Recall that there are two divisions during meiosis: meiosis I and meiosis II. The genetic material of the cell is duplicated during S phase of interphase just as it was with mitosis resulting in 46 chromosomes and 92 chromatids during Prophase I and Metaphase I.
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After replication of the 46 chromosomes, the cell contains 92 chromatids (in 46 pairs). After mitosis two identical cells are created with the same original number of chromosomes, 46.
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Therefore, meiosis results in four haploid genetically unique daughter cells, each with half the DNA of the parent cell (Figure below). In human cells, the parent cell has 46 chromosomes (23 pairs), so the cells produced by meiosis have 23 chromosomes. These cells will become gametes.
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As gametes are formed, the 46 chromosomes from each parent cell (23 pairs of chromosomes) are divided through meiosis so that each gamete is haploid, having only 23 unpaired chromosomes.
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1 diploid cell (2n) cell becomes 4 haploid (n) germ cells (eggs or sperm). During meiosis, chromosomes are replicated once in S phase (just like mitosis) into sister chromatids, but the cell divides twice.
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*the beginning of meiosis : 46 chromosomes and each chromosome has one chromatid. *Prophase I : 46 Chrms, & each chromosome has 2 chromatid. *Prophase II: 23 Chrms, each one has 2 chromatids. *Telophase II: 23 chrms, each one has 1 chromatids.
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4 Drosophila unfertilized egg cell will have 4 chromosomes as egg cell is haploid and haploid number of chromosomes in drosophila is 4. Human egg cells will have 23 chromosomes, as the haploid number of chromosomes in humans is 23. Ans. 3 Meiosis is important because it produces gametes, female or male germ cells.
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Reason for correct answer: The chromosome number present in the haploid cells of dog will be 39 because during the meiosis I process, the homologous pairs separate. So, 78 chromosomes present in the diploid cells will assemble at the equator of the cell.
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Summary: At the end of meiosis, 4 daughter cells are formed = eggs or sperm. Each contains half as many chromosomes as the parent cell (n); each cell is genetically different from its parents and from its "siblings". Fertilization of an egg by a sperm restores the chromosome number to 2n.
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Mitosis: Diploid, 46 chromosomes, somatic cells, 2n. Meiosis: Gametes, Haploid, 1n, 23 chromosomes, egg or cell.
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Germ cells have only half the number of chromosomes as a diploid cell   one of each pair. The number of chromosomes is reduced from 46 (23 pairs) to 23 during the process of meiosis. Because they have only half the total chromosomes in a somatic cell, they are termed haploid (n).
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In humans, there are 23 chromosomes in telophase II, the haploid number, n, for humans. In anaphase II, the sister chromatids present at the end of meiosis I are separated into 23 individual chromosomes.
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Each pig has about 70 billions cells, each containing 38 chromosomes in the nucleus of each cell. Two of the chromosomes, called sex chromosomes, mostly dictate the sex of the pig: two X-chromosomes result in a female pig while one X-chromosome and one Y-chromosome result in a male.