how many chromosomes does a human gamete have?
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Haploid describes a cell that contains a single set of chromosomes. The term haploid can also refer to the number of chromosomes in egg or sperm cells, which are also called gametes. In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells.
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As a result, two gametes virtually never have exactly the same combination of chromosomes. Each chromosome contains dozens to thousands of different genes. The total possible combination of alleles for those genes in humans is approximately 70,368,744,177,664.
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For a human, n = 23, so there are 223, or about 8 million, possible chromosome combinations! The number of different chromosome combinations in gametes is one factor that contributes to genetic variation.
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Sex chromosomes. Human chromosomes typically exist in somatic cells as pairs. Normal somatic cells are diploid and contain a total of 23 pairs of chromosomes: 22 of these pairs are autosomes and one is a pair of sex chromosomes. Gametes are haploid, meaning their chromosomes do not exist in pairs.
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Spermatocytes are a type of male gametocytes in human. There are two types of spermatocytes: primary spermatocytes and secondary spermatocytes. Primary spermatocytes are diploid cells which consist of 46 chromosomes in each cell. Each secondary spermatocyte contains 23 chromosomes because they are haploid cells.
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Sperm cells have 23 chromosomes. This is true of egg cells as well. Most cells in the body have 46 chromosomes. However, reproductive cells only have...
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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. There are 22 pairs of autosomal chromosomes and one pair of sex chromosomes.
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Answer and Explanation: Sperm cells have 23 chromosomes.
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Human somatic cells have 46 chromosomes consisting of two sets of 22 homologous chromosomes and a pair of nonhomologous sex chromosomes. This is the 2n, or diploid, state. Human gametes have 23 chromosomes or one complete set of chromosomes. This is the n, or haploid, state.
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There are 8,324,608 possible combinations of 23 chromosome pairs. As a result, two gametes virtually never have exactly the same combination of chromosomes.
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a, Gametes transmit genes from two parents to offspring. b. You have 46 chromosomes in your somatic cells and 23 chromosomes in your gametes.
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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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In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females.
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Every human cell contains 46 chromosomes, arranged as 23 pairs (called autosomes), with one member of each pair inherited from each parent at the time of conception.
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Starts with 46 chromosomes in humans and forms haploid cells of 23 chromosomes.
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The term haploid can also refer to the number of chromosomes in egg or sperm cells, which are also called gametes. In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells.
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- 10. A frog gamete has 13 chromosomes. Every frog body cell, then, has 26 chromosomes.