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Molecular Basis Of Inheritance

Question
CBSEENBI12002792
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Antiparallel strands of a DNA molecule means that

  • one strand turns anti-clockwise

  • the phosphate groups of two DNA strands, at their ends, share the same position

  • the phosphate groups at thestart of two DNA strands are in opposite position (pole)

  • one strand turns clockwise

Solution

C.

the phosphate groups at thestart of two DNA strands are in opposite position (pole)

J.D. Watson and F.H.C. Crick (1953) showed that DNA has a double helical structure with two polynucleotide chains structure with two polynucleotide chains connected by hydrogen bonds and running in opposite directions (antiparallel). The antiparallel strands of a DNA molecule means that the phosphate groups at the start of two DNA strands are in opposite position (pole).

Some More Questions From Molecular Basis of Inheritance Chapter

List the number of base pairs in :

(i) lambda bacteriophage

(ii) E.coli and

(iii) haploid content of human DNA.

Comment two chains of DNA have antiparallel polarity.

What is the difference between DNAs and DNAase ?

Which was first genetic material ?

Suggest one evidence to prove that RNA was first genetic material.

Why was RNA unstable ?

What made DNA more preferrable as genetic material ?

Process of replication is completed in how much time in E.coli ?

What is average rate of polymerization ?

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