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Base Pairing

Crossing over...

Question

Crossing over between chromatids can occur only between

A

Homologous chromosomes

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B

Maternal chromosomes

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C

Paternal chromosomes

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D

Any two chromosome

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Solution

The correct option is A
Homologous chromosomes

Crossing over between chromatids can occur only between homologous chromosomes. While the maternal and paternal chromosomes are separating, the chromatid material very often gets exchanged between two members of the homologous pair resulting in genetic recombination during the meiotic cell division.

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Similar questions

Q. Crossing over between chromatids can occur only between:

Q. Statement I: Synapsis is the process of pairing of homologous chromosomes.
Statement II: Crossing over occurs between sister chromatids of homologous chromosomes.
Which of the above statements are correct?

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(i) Complete separation of chromatids
(ii) Pairing of homologous chromosome
(iii) Linning up of paired chromosome on the equatorial plane
(iv) Crossing over between chromatids

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