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14 Cards in this Set
- Front
- Back
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Meiosis
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Nuclear division process that halves the chromosomes number. Basis of sexual reproduction Sex
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Sexual Reproduction
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Reproductive mode by which offspring arise from two parents and inherit genes from both
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Alleles
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Forms of a gene with slightly different DNA sequences; may encode slightly different versions of the genes product
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Fertilization
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Fusion of two gametes to form a zygote
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Gamete
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Mature, haploid reproductive cell (egg, or sperm)
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Germ Cell
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Immature reproductive cell that gives rise to haploid gametes when it divides
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Haploid
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Having one of each type of chromosome characteristics of the species
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Somatic
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Relations to the body
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Zygote
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Diploid cell formed by fusion of two gametes; the first cell of a new individual
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Crossing over
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Process in which homologous chromosomes exchange corresponding segments during prophase 1 of meiosis
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Egg
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Mature female gamete, or ovum
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Gametophyte
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A haploid, multicelled body in which gemetes form during the life cycle of land plants and some algae
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Sperm
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Mature male gamete
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Sporophyte
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Diploid, spore-producing stage of a plant life cycle
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