Biology Chapter 11 Section 4, 5

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Biology Chapter 11 Section 4-5

Homologous

term used to refer to chromosomes that each have a corresponding chromosome from the opposite-sex parent

Diploid

term used to refer to a cell that contains both sets of homologous chromosomes

Haploid

term used to refer to a cell that contains only a single set of chromosomes and therefore only a single set of genes

Meiosis

process by which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell

Tetrad

structure containing 4 chromatids that forms during meiosis

Crossing-over

process in which homologous chromosomes exchange portions of their chromatids during meiosis

Gene map

diagram showing the relative locations of each known gene on a particular chromosome

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