Chromatids are
A) identical until crossing over occurs.
B) attached at their centromeres and are identical until crossing over occurs.
C) a pair of chromosomes, one from the mother and one from the father.
D) attached at their centromeres.
E) attached at the centriole.
B
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Fill in the blank(s) with the appropriate word(s).
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What will be an ideal response?
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