how many chromosomes would the resulting zygote have?
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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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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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This first cell has 46 chromosomes, 23 from the mother and 23 from the father. All the instructions for how the child will grow are in the genes on these chromosomes. Each cell of the body will contain exact copies of the 23 pairs of chromosomes that were in the first cell that was formed by the egg and sperm.
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Normally, meiosis causes each parent to give 23 chromosomes to a pregnancy. When a sperm fertilizes an egg, the union leads to a baby with 46 chromosomes. But if meiosis doesn't happen normally, a baby may have an extra chromosome (trisomy), or have a missing chromosome (monosomy).
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Sexual reproduction requires the union of two specialized cells, called gametes, each of which contains one set of chromosomes. When gametes unite, they form a zygote, or fertilized egg that contains two sets of chromosomes.
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Genetic Components of Sex and Gender Humans are born with 46 chromosomes in 23 pairs.
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At the end of mitosis, the two daughter cells will be exact copies of the original cell. Each daughter cell will have 30 chromosomes. At the end of meiosis II, each cell (i.e., gamete) would have half the original number of chromosomes, that is, 15 chromosomes. 2.
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But sometimes an error occurs when the 46 chromosomes are being divided in half. An egg or sperm cell may keep both copies of chromosome number 21, instead of just 1 copy. If this egg or sperm is fertilized, then the baby will have 3 copies of chromosome number 21. This is called trisomy 21.
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Spermatids have half this number, for a total of 23 chromosomes. Each chromosome is composed of only a single chromatid following division, for a total of 23 chromatids. When the zygote is formed during the fusion of the sperm and egg cells, the final cell is diploid, containing 46 chromosomes (23 from each gamete).
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Answer and Explanation: Sperm cells have 23 chromosomes.
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The sperm and egg each have only half the number of chromosomes as other cells in the body. These cells are haploid, with a single set of chromosomes. ... The cell they form is called a zygote. The zygote is diploid, with two sets of chromosomes, one from each parent.
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Each daughter cell will have 30 chromosomes. At the end of meiosis II, each cell (i.e., gamete) would have half the original number of chromosomes, that is, 15 chromosomes. 2.
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*Meiosis results in the formation of gametes. Fertilization results in the formation of a zygote. All of the cells in the body, except for sperm and eggs, have 46 chromosomes.
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During sexual reproduction, fertilization of the ovum (n, 23 chromosomes) by the sperm (n, 23 chromosomes) restores the diploid number and creates a zygote (2n, 46) that divides and grows by mitosis to form a multicellular human.
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In a human egg or sperm, there are 23 chromosomes, one of which is an X or Y. A human egg is haploid (has 23 chromosomes) and a sperm is haploid (has 23 chromosomes). Upon fertilization, the new baby now has the 'correct' human number of 46 chromosomes in each of its somatic cells.
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During sexual reproduction, fertilization of the ovum (n, 23 chromosomes) by the sperm (n, 23 chromosomes) restores the diploid number and creates a zygote (2n, 46) (awww..) that divides and grows by mitosis to form a multicellular human.
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remember that a typical cell in your body has 46 chromosomes (23 pairs of homologous chromosomes) suppose that human sperm and eggs were produced by mitosis.