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[A]: Raphanobrassica is an excellent exa...

[A]: Raphanobrassica is an excellent example of allotertraploidy.
[R]: It involves intergeneric cross between radish genus- Raphanus and cabbage genus- Brassica, each of which has a diploid chromosome number of 18.

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

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The correct Answer is:
A
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  2. [A]: The series of enzyme controlled reactions determine traits in an ...

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  3. [A]: Raphanobrassica is an excellent example of allotertraploidy. [...

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  4. [A]: Plasmids are double .stranded extra chromosomal DNA. [R]: Plas...

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  5. Assertion : Adenine cannot pair with cytosine. Reason : Because ther...

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  6. [A]: The base ratio (A+T )/(G+C) is constant in a particular organism....

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  7. [A]: Drosophila is commonly used in the study of genetics. [R]: Becaus...

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  8. [A]: When RH positive male marries RH negative woman the situation can...

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  9. [A]: Hershey and Chase experiment showed that protein is the genetic m...

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  10. [A]: The DNA fingerprinting relies on recombinant DNA technology and c...

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  11. [A]: Chromatid is one of a pair of replicated chromosomes found during...

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  12. [A]: For a recipient to receive blood from a donor, the recipient's pl...

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  13. [A]: Lampbrush chromosomes are found in the oocytes of certain animals...

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  14. Assertion (a) : Superumerary chromosomes do not usually have anay eff...

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  15. [A]: The chromosomes of plants are larger than animals. [R]: The ch...

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  16. [A]: Metacentric chromosomes are V- shaped. [R]: In these chromosom...

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  17. [A]: Chromosomes are divided into heterochromatin and euchromatin part...

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  18. [A]: Triplet code is a degenerate one. [R]: Explanation for degener...

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  19. Assertion : Identical twins are produced during two births , resulti...

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  20. [A]: Genetic engineering is the use of tech- nology to alter the genom...

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