how many chromosomes would be found in zygote?
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Thus, the zygote has 46 chromosomes, and when the zygote undergoes mitosis to begin to form an embryo, each cell will have the normal number of 46 chromosomes. Cells that have two copies of each chromosome (i.e. cells that have pairs of homologous chromosomes) are called diploid cells.
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During fertilization, gametes from the sperm combine with gametes from the egg to form a zygote. The zygote contains two sets of 23 chromosomes, for the required 46. Most women are 46XX and most men are 46XY, according to the World Health Organization.
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Humans usually have 22 pairs of homolog chromosomes (autosomes) and as sex chromosomes 2 x chromosomes (in female), or 1 x and 1 y chromosome (in males), thus in total 46 chromosomes per body cell (see human karyogram; 2n = 46) and 92 chromatids per cell after replication.
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Each normal embryo contains 46 chromosomes, 23 of which are contributed by the sperm and 23 by the egg. An embryo that contains 46 normal chromosomes is called a euploid embryo .
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In horses n=32 and 2n=64. When two haploid gametes are fused at fertilisation, the diploid number of chromosomes is restored in the zygote. The alternation of meiosis and fertilisation in the life cycle maintains the constancy of the chromosome complement from one generation to the next (see figure 1).
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When the sperm and egg cells unite at conception, each contributes 23 chromosomes so the resulting embryo will have the usual 46. Meiosis also allows genetic variation through a process of DNA shuffling while the cells are dividing. Mitosis and meiosis, the two types of cell division.
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Each cell in a normal human embryo has 23 pairs of homologous chromosomes, for a total of 46 chromosomes per cell.
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Human oocytes pack the mother's DNA into 46 chromosomes. When they divide into eggs -- a process called meiosis -- these 46 chromosomes gather along the midline of the oocyte and are pulled in two directions by spindle fibers. The final product of meiosis is an egg cell with 23 chromosomes.
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The human body consists of millions of cells; each cell (liver, intestinal etc) contains 23 pairs of chromosomes except for germ cells (egg and sperm) and red blood cells. Thus a total of 46 chromosomes are present in human cells.
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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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During fertilization, gametes from the sperm combine with gametes from the egg to form a zygote. The zygote contains two sets of 23 chromosomes, for the required 46.
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Each normal embryo contains 46 chromosomes, 23 of which are contributed by the sperm and 23 by the egg.
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In humans, the male gamete is called sperm, and the female gamete is called an egg. When the gametes join they form a cell called a zygote. Human sperm and eggs contain 23 chromosomes. Human zygotes contain 46 chromosomes.
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As the above image shows, there are 8 chromosomes present, but 16 chromatids. Similarly, in humans (2n=46), there are 46 chromosomes present during metaphase, but 92 chromatids.
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Chicken have 78 chromosomes in their body cells. 13. A chicken sperm and egg combine to create a zygote.
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Is a zygote considered a somatic cell? Technically, yes. A zygote is comprised of several similar somatic cells, created by the interaction of two gametes (sperm and egg, usually, but other organisms use other methods.
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In humans, over 8 million (223) chromosome combinations exist in the production of gametes in both the male and female. A sperm cell, with over 8 million chromosome combinations, fertilizes an egg cell, which also has over 8 million chromosome combinations.