how many chromosomes do tobacco plant pollen cells have?
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1.4 Tobacco plants have 48 chromosomes. State how many chromosomes tobacco plant pollen cells have.
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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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Answer and Explanation: If a horse has 32 chromosomes in all of its body cells then the gametes will have 16 chromosomes in each cell. Meiosis is the process of forming...
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So while a human cell (diploid) has two copies of 23 chromosomes for a total of 46 chromosomes, a wheat cell (hexaploid) has six copies of its seven chromosomes (42 chromosomes total).
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In humans, gametes have 23 chromosomes. Sometimes either homologous chromosomes or sister chromatids fail to separate properly during meiosis. This is called nondisjunction, and it produces gametes with an abnormal number of chromosomes.
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For example, in humans, somatic cells contain 46 chromosomes organized into 23 pairs. By contrast, gametes of diploid organisms contain only half as many chromosomes. In humans, this is 23 unpaired chromosomes.
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How many different chromosomes would be in the diploid cell? A haploid cell has 20 total chromosomes.
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1. There are 20 chromosomes in each leaf cell of a maize plant. What is the number of chromosomes in the male nucleus of a pollen grain of maize?
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Human somatic cells have 46 chromosomes, including 22 homologous pairs and one pair of nonhomologous sex chromosomes. This is the 2n, or diploid, condition. Human gametes have 23 chromosomes, one each of 23 unique chromosomes.
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Humans have 23 pairs of chromosomes, for a total of 46 chromosomes. In fact, each species of plants and animals has a set number of chromosomes. A fruit fly, for example, has four pairs of chromosomes, while a rice plant has 12 and a dog, 39.
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Sperm cell of grasshopper contains e. The diploid cells of the grasshopper contain 24 chromosomes. Therefore, the haploid cells like the sperm cells will have half of the chromosomes as that of diploid cells. The chromosome number for grasshopper sperm cells will be 12.
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The pollen of a chickweed plant contains 22 chromosomes.
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At the end of the first meiotic division, each secondary spermatocyte contains 23 chromosomes. Each of these chromosomes consists of paired chromatids. Each secondary spermatocyte completes the second meiotic division without the replication of DNA and produces 2 spermatids each containing 23 chromosomes.
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the venus flytrap diploid cell has 32 chromosomes and haploid cells each contain 16 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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Questions 153 - 156: The pollen tube contains 12 chromosomes and 3 haploid nuclei, so each nucleus will have 4 chromosomes. If each sperm nucleus has 4 chromosomes, then the egg must also have 4 chromosomes and the diploid number for the plant must be 8.
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In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells. The number of chromosomes in a single set is represented as n, which is also called the haploid number.