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Chapter 11 Vocab.

Straughn 9th Grade Honors Biology

QuestionAnswer
carrier individual heterozygous for a recessive disorder such as cystic fibrosis or Tay-Sachs disease
pedigree 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
incomplete dominance complex inheritance pattern in which the heterozygous phenotype is intermediate between those of the two homzygous parent organisms
codominance complex inheritance pattern that occurs when neither allele is dominant and both alleles are expressed
multiple alleles having more than two alleles for a specific trait
epistasis interaction between alleles in which one allele hides the affects of another allele
sex chromosome X or Y chromosome; paired sex chromosomes determine an individuals gender - XX individuals are female and XY individuals are male
outsome chromosome that is not a sex chromosome
sex-linked trait characteristic; such as red-green color blindness, controlled by genes on the X chromosome; also called the X-linked trait
polygenic trait characteristic; such as eye color or skin color, that results from the interaction of multiple gene pairs
karyotype micrograph in which the pairs of homologus chromosomes are arranged in decreasing size
telomere protective cap made of DNA that is found on the ends of a chromosome
nondisjunction cell division in which the sister chromatids do not separate correctly; resulting in gametes with an abnormal number of chromosomes
Created by: user-1582395
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