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Author Question: When homologous chromosomes crossover, what occurs? A) Two chromatids get tangle (Read 577 times)

curlz

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on: Jun 18, 2013
When homologous chromosomes crossover, what occurs?
A) Two chromatids get tangled, resulting in one re-sequencing its DNA.
B) Two sister chromatids exchange identical pieces of DNA.
C) Specific proteins break the two strands and re-join them with their homologs.
D) Each of the four DNA strands of a tetrad is broken and the pieces are mixed.
E) Maternal alleles are "corrected" to be like paternal alleles and vice versa.


coco

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Reply #1 on: Jun 19, 2013
I'm pretty sure it's C. Good luck :D


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curlz

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Reply #2 on: Jul 29, 2013
Great..that really helped.


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