12. Meiosis
Genetic Variation During Meiosis
Multiple Choice
Multiple ChoiceWhich of the following processes occurs when homologous chromosomes cross over in meiosis I?
a) Two sister chromatids get tangled, resulting in one re-sequencing its DNA.
b) Two sister chromatids exchange identical pieces of DNA.
c) Maternal alleles are "corrected" to be like paternal alleles and vice versa.
d) Corresponding segments of non-sister chromatids from homologous chromosomes are exchanged.
A
Two sister chromatids get tangled, resulting in one re-sequencing its DNA.
B
Two sister chromatids exchange identical pieces of DNA.
C
Maternal alleles are "corrected" to be like paternal alleles and vice versa.
D
Corresponding segments of non-sister chromatids from homologous chromosomes are exchanged.
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