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Terms for Chapter 6
Term | Definition |
---|---|
Somatic Cell | Cell that makes up all of the body tissues and organs, except gametes |
Gamete | Sex cell; an egg or sperm cell |
Homologous Chromosomes | Chromosomes that have the same length, appearance, and copies of genes, although the alleles may differ |
Autosome | Chromosome that contains genes for characteristics not directly related to the sex of the organism |
Sex Chromosome | Chromosome that directly controls the development of sexual characteristics |
Sexual Reproduction | Process by which two gametes fuse and offspring that are a genetic mixture of both parents are produced |
Fertilization | Fusion of an egg and a sperm cell |
Diploid | Cell that has two copies of each chromosome, one from an egg and one from a sperm |
Haploid | Cell that only has one copy of each chromosome |
Meiosis | Form of nuclear division that divides a diploid cell into haploid cells; important in forming gametes |
Gametogenesis | Process by which gametes are produced through the combination of meiosis and other maturational changes |
Sperm | Male Gamete |
Egg | Female gamete |
Polar Body | Haploid cell produced during meiosis in the female of many species; these cells have little more than DNA and eventually disintegrate |