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Biology Ch 11

TermDefinition
Carrier(11.1) individual heterozygous for a recessive disorder such as cystic fibrosis or Tay-Sachs disease.
Pedigree(11.1) diagrammed family history that is used to study inheritance patterns of a trait through several generations and that can be used to predict disorders in future offspring.
Autosome(11.2) chromosome that is not a sex cell.
Codominance(11.2) complex inheritance pattern that occurs when neither allele is dominant and both alleles are expressed.
Epistasis(11.2) interaction between alleles in which one allele hides the effects of another allele.
Incomplete Dominance(11.2) complex inheritance pattern in which the heterozygous phenotype is intermediate between those of two homozygous parent organisms.
Multiple Alleles(11.2) having more than two alleles for a specific trait.
Polygenic Trait(11.2) characteristic , such as eye color or skin color, that results from the interaction of multiple gene pairs.
Sex Chromosome(11.2) X or Y chromosome; paired sex chromosomes determine an individuals gender-XX individuals are female and XY individuals are male.
Sex-linked Trait(11.2) characteristic, such as red-green color blindness, controlled by genes on the X chromosome; also called a X-linked trait.
Karyotype(11.3) micrograph in which the pairs of homologous chromosomes are arranged in decreasing size.
Nondisjunction(11.3) cell division in which the sister chromatids do not separate correctly, resulting in gametes with an abnormal number of chromosomes.
Telomere(11.3) protective cap made of DNA that is found on the ends of a chromosome.
Created by: smeisman
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