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[A]: The base ratio (A+T )/(G+C) is cons...

[A]: The base ratio (A+T )/(G+C) is constant in a particular organism.
[R]: The ratio is, however, different in the dif- ferent DNA molecules

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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TRUEMAN BIOLOGY-Genetics-ASSERTION AND REASON
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  2. [A]: Adenine can not pair with cytosine. [R]: Because there would b...

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

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

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

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

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  7. [A]: The DNA fingerprinting relies on recom- binant DNA technology and...

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

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

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  10. [A]: Lampbrush chromosomes arf3 found in the oocytes of certain animal...

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

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

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

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  14. [A]: Chromosomes are divided into hetero- chromatin and euchromatin pa...

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

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

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  17. [A]: Genetic engineering is the use of technology to alter the genome ...

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  18. [A]: Polymerase chain reaction (PCR) fol- lowed by DNA probe is used d...

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  19. [A]: The preparation of recombinant DNA requires restriction enzymes. ...

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  20. [A]: Plasmids are small accessory rings of DNA found in some bacteria ...

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