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B- Unit 7 Lesson 4

Genetic Variation and Evolution

TermDefinition
genetic recombination an exchange of DNA having the same genes between homologous chromosomes that results in new combinations of alleles from multiple genes on the same chromosome
recombinant chromosomes chromosomes that have undergone genetic recombination and have new combinations of alleles
mutation a change in genetic information caused by a change in the sequence of DNA
sexual reproduction a type of reproduction which requires two individuals to exchange genetic material
genes a sequence of DNA that codes for RNA and/or protein
homologous chromosomes chromosomes that contain the same genes at the same locations
chromosomes a strand of DNA that has been wrapped around protein to make it fit into a smaller volume
alleles a version of a particular gene
meiosis a type of cellular division used in sexual reproduction to produce sex cells that have half the number of chromosomes of body cells and a different genetic makeup due to genetic recombination
somatic cells cells that make up the body of an individual as opposed to gametes, which are sex cells
zygote a single cell resulting from the fusion, or combining, of two gametes during sexual reproduction
Created by: atrang
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