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haploid |
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haploidHaving a single set of chromosomes in each cell. Most higher organisms are diploid - that is, they have two sets - but their gametes (sex cells) are haploid. Some plants, such as mosses, liverworts, and many seaweeds, are haploid, and male honey bees are haploid because they develop from eggs that have not been fertilized. See also meiosis. |
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Mitochondrial DNA is a useful marker in phylogenetic studies and molecular systematics because of its maternal inheritance, haploid nature, and rapid rate of evolution (38). Resting, or diapause, eggs are haploid eggs that require fertilization and typically are produced after the production of males by females who have entered the sexual reproductive cycle. Among many ants, bees, wasps, mites, and thrips, for example, unfertilized eggs develop into haploid males, which have just one set of chromosomes. |
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haploid
