Chapter 12 - Meiosis Flashcards Preview

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Flashcards in Chapter 12 - Meiosis Deck (13):
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Meiosis

Nuclear division process that halves the chromosome number. Basis of sexual reproduction

1

Sexual reproduction

Reproductive mode by which offspring arise from two parents and inherit genes from birth

2

Alleles

Forms a gene with slightly different DNA sequences; may encode slightly different versions of the same gene's product

3

Fertilization

Fusion if two gametes to form a zygote

4

Gamete

Mature, haploid reproductive cell an egg or sperm

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Haploid

Having one of each type of chromosomes

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Somatic

Relating to the body

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Zygote

Diploid cell formed by fusion of two gametes, the first cell of a new individual

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Crossing-over

Process in which homologous chromosomes exchange corresponding segments during prophase 1 of meiosis

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Egg

Mature female gamete, or ovum

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Gametophyte

A haploid, multicelled body in which gametes form during the life cycle of land plants and some algae

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Sperm

Mature male gamete

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Sporophyte

Diploid, spore-producing stage of a plant life