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11 Cards in this Set

  • Front
  • Back
diploid
a cell with two of each kind of chromosome
haploid
a cell with one of each kind of chromosome
homologous chromosomes
paired chromosomes wiht genes for the same traits arranged in the same order
meiosis
period of nuclear cell division in which two daughter cells are formed, each containing a complete set of chromosomes
sperm
haploid male sex cells produced by meiosis
eggs
haploid female sex cell produced by meiosis
zygote
diploid cell formed when a sperm fertilizes an egg
sexual reproduction
pattern of reproduction that involves the production and subsequent fusion of haploid sex cells
crossing over
exchange of genetic material between non-sister chromatids from homologous chromosomes during prophase I of meiosis; results in new allele combinations
genetic recombination
major source of genetic variation among organisms caused by reassortment or crossing over during meiosis
nondisjunction
failure of homologous chromosomes to separate properly during meiosis; results in gametes with too many of too few chromosomes