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Biology Chapter 8 OutlinChromosome: one of the chromosomes that determine a sex; sex chromosomes Y Chromosome: one of the chromosomes that determine sex, Sex chromosome Sex chromosomes: because the two chromosomes differ between the sexes, we call them sex chromosomes. Autosomes: chromosomes not related to an organisms sex Sex-linked characteristic: trait whose genes are carried on the X chromosome Nondisjunction: failure of homologs to segregate during meiosis. Chromosome theory of heredity: the theory that genes are located on chromosomes Gene linkage: the genes that occur on the same chromosome (linked Crossing-over: exchange of segments of chromosomal material between two strands of a tetrad; occurs during prophase of meiosis Recombination gametes: gametes with a set of linked genes different than that found in the parent. Genetic map: the location of genes on a chromosome Continuous variation: the presence of many multiple length offspring. Multiple genes: three or more different alleles controlling a trait Modifier genes: genes that affect the expression of other alleles.
Genetic counseling: type of counseling in which parents can be advised of their chances of having offspring with a hereditary disease Lethal gene: an allele that causes death 11 Ultrasonography: a technique used to determine the position and anatomy of a fetus. Fetoscopy: allows direct observation of the fetus and surrounding tissues. Endoscope: device that allows a fetus to be viewed while it is still in the uterus.
Free research essays on topics related to: determine, chromosome, chromosomes, sex sex, genes
Research essay sample on Chromosomes That Determine One Of The Chromosomes Sex