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In crossing over exhange of chromosomes ...

In crossing over exhange of chromosomes occur between

A

non-sister chromatids of homologous chromosomes

B

sister chromatids of homologous chromosomes

C

non-sister chromatids of non-homologous chromosomes

D

sister chromatids of non-homologous chromosomes

Text Solution

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The correct Answer is:
A
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Explore conceptually related problems

Read the following statements. (a) During crossing over, exchange of genetic material between sister chromatids occurs. (b) By the end of diakinesis, nucleolus reappears. (c) During the stage between telophase 1 and prophase II, chromosomes get elongated. Which of the given statements is/are correct?

Crossing over occurs between

Crossing over occurs between

Crossing over occurs between

Assertion (A): Crossing over takes place between two homologous chromosomes. Reason (R ): Crossing over is the exchange of chromosomal fragments between homologous chromosomes.

A : Crossing over is exchange of genetic material between non-homologous chromosomes. R : it produces new linkages.

Crossing over occurs between :

Assertion :- Translocation is a illigal crossing over Reason : Translocation is exchange of chromosomal segments between nonhomologous chromosome

The theory of recombinaiton of linked gene due to the crossing over of chromosome during zygotene of meiosis put forwarded by