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Definition
| pairing at meiosis and having the same structural features and pattern of genes |
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Term
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Definition
| a cell or organism that has paired chromosomes, one from each parent. In humans, cells other than human sex cells, are diploid and have 23 pairs of chromosomes. Human sex cells (egg and sperm cells) contain a single set of chromosomes and are known as haploid |
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Term
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Definition
| when a cell has only one set of chromosomes. A normal eukaryote organism is composed of diploid cells, one set of chromosomes from each parent. However, after meiosis, the number of chromosomes in gametes is halved |
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Definition
| The daughter cells divide again in meiosis II, splitting up sister chromatids to form haploid gametes. Male and female gametes fuse during fertilization, creating a diploid cell with a complete set of paired chromosomes |
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Term
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Definition
| form tetrad-) "group of four" (see tetra-). A group of four chromatids formed from each of a pair of homologous chromosomes that split longitudinally during the prophase of meiosis. |
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Term
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Definition
| the exchange of genes between homologous chromosomes, resulting in a mixture of parental characteristics in offspring. |
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