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Twatson22 Twatson22
wrote...
Posts: 759
Rep: 0 0
6 years ago
Crossing over mixes up _____.
 
  a. chromosomes that are not homologous pairs
  b. alleles on homologous pairs
  c. zygotes
  d. gametes
  e. sister chromatids
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wrote...
6 years ago
b
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