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[A]: Exchange of genetic material occurs...

[A]: Exchange of genetic material occurs dur- ing meiosis.
[R]: There is chiasma formation in meiosis.

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

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The correct Answer is:
A
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[A] : The first meiotic division is known as reduction division . [R] : The first division in meiosis results in reduced number (half) of chromosomes .

TRUEMAN BIOLOGY-Genetics-ASSERTION AND REASON
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  2. Assertion : Plasmids are double-stranded extra chromosomal DNA. Reas...

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  3. [A]: Exchange of genetic material occurs dur- ing meiosis. [R]: The...

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  4. Assertion:XXX females are called super females Reason : They often g...

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  5. [A]: A gene affecting the expression of an- other nonallelic gene is c...

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  6. [A]: The sex linked genes are passed on to the grandson through the da...

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  7. Assertion : Muatations are necessary for the survial to the species. ...

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  8. [A]: It is not possible to take photograph and count chromosomes when ...

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  9. [A]: Neurospora is an ideal genetic material for research. [R]: Bec...

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  10. [A]: Heterosis is superiority of F1 hybrid over its two genetically d...

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  11. [A]: Mendelian recombinations are due to crossing over. [R]: Crossi...

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  12. [A]: Genes confined to differential region of homologous chromosomes a...

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  13. [A]: Chromosomes appear longer during te-lophase. [R]: The term chr...

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  14. [A]: Copy choice theory for crossing over was propos'ed by Belling. ...

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  15. [A]: Kornberg and Ochoa got Nobel Prize in the field of genetics. [...

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  16. Consider the following statements : Assertion (A) : Amber codon is a...

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  17. [A): DNA replicates after mitosis. [R]: In mitosis, the chromosomal...

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  18. [A]: DNA code is copied in the synthesis of tRNA. [R]: tRNA moves o...

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  19. Assertion : DNA is associated with proteins. Reason : DNA binds aro...

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  20. [A]: Translocation involves transfer of genetic material between homol...

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