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[A]: DNA code is copied in the synthesis...

[A]: DNA code is copied in the synthesis of tRNA.
[R]: tRNA moves out of the nucleus and after attaching on ribosomes form the template

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:
D
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In the protein synthesis, tRNA carrying the amino acid enters from which site of ribosome?

Assertion (A) : Replication and transcription occur in the nucleus but translation occurs in the cytoplasm. Reason (R ) : m-RNA is transferred from the nucleus into the cytoplasm where ribosomes and amino acids are available for protein synthesis.

[A] : In mitosis , most of the ordered sequence of phases occur during I phase . [R] : Synthesis of mRNA , tRNA and ribosomal RNA occurs is G_(1) and replication of DNA of S phase .

A 3' ______________ 5' B C 5' _______________ 3'D AB and CD represent two strands of a DNA molecule. When this molecule undergoes replication, forming a replication fork between A and C in the above. (i) Name the template strands for replication. (ii) Using which strand as the template, will there be continuous synthesis of a complementary DNA strand? (iii) Complementary to which strand will Okazaki segments get synthesised and discontinuous synthesis will occur (iv) What are template strands and Okazaki pieces? (v) In which direction is a new strand synthesized?

TRUEMAN BIOLOGY-Genetics-ASSERTION AND REASON
  1. Consider the following statements : Assertion (A) : Amber codon is a...

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

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

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

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

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  6. Assertion : Left-handed DNA is known as B-DNA. Reason : Right - han...

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  7. [A]: Meselson and Stahl tested the Watson and Crick Theory of DNA repl...

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  8. Assertion (A) : Adenine cannot pair with cytosine. Reason ® : Becaus...

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  9. [A]: DNA is associated with proteins. [R]: DNA winds around histon...

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  10. Assertion. The genetic code is degenerate. Reason. Most amino acids ...

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  11. Assertion A non-overlapping code means that a base in mRNA is not use...

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  12. [A]: Recombinant DNA contains DNA from two or more sources. [R]: Pl...

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

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  14. [A]: The Lac operon is an example of induc- ible system. [R]: When L...

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  15. [A]: Vectors carry only the foreign DNA/gene into the host cell. [R]...

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  16. [A]: The series of enzyme controlled reac- tions determine traits in a...

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  17. [A]: Raphanobrassica is an excellent ex- ample of allotertraploidy. ...

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

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  19. [A]: Adenine can not pair with cytosine. [R]: Because there would b...

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

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