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AP Bio A-12-5

Unit twelve lesson five

QuestionAnswer
aneuploidy A chromosomal aberration in which one or more chromosomes are present in extra copies or are deficient in number.
crossing over The reciprocal exchange of genetic material between nonsister chromatids durin prophase I of meosis.
genetic map An ordered list of genetic loci (genes or other genetic markers) along a chromosome.
genomic imprinting A phenomenon in which expression of an allele in offspring depends on whether the allele is inherited from the male or female parent.
linked genes Genes located close enough together on a chromosome that they tend to be inherited together.
nondisjunction An error in meiosis or mitosis in which members of a pair of homologous chromosomes or a pair of sister chromatids fail to separate properly from each other.
polyploidy A chromosomal alteration in which the organism possesses more than two complete chromosome sets. It is the result of an accident of cell division.
Created by: Jason Stanwood
 

 



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