Differentiate between the followings:(a) Repetitive DNA and Satel

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 Multiple Choice QuestionsShort Answer Type

41. Write differences between Prokaryotic DNA and Eukaryotic DNA.
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42.

Differentiate between the followings:
(a) Repetitive DNA and Satellite DNA
(b) mRNA and tRNA
(c) Template strand and Coding strand


1. Repetitive DNA and Satellite DNA
Repetitive DNA Satellite DNA
Repetitive DNA are short sequences which are repeated many times. Satellite DNA are DNA sequences that contain highly repetitive DNA

2. 

mRNA tRNA
Messenger RNA acts as a transcript .  tRNA acts as and adator molecule
2.Linear in structure


2. It has a structure similar to clover leaf . 

3.

Template strand Coding strand
1. It acts as an template for the synthesis of mRNA. 1.It does not act as an template.
2. It has an sequence complementary to the mRNA 2. It has a sequnce similar to the mRNA.
3. It runs in 3'-5' direction 3.It runs from 5'-3' direction.
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43. Which property of DNA double helix led Watson and Crick to hypothesize semi-conservative mode of DNA replication ? Explain.
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44. Differentiate Leading Strand and Lagging Strand.
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 Multiple Choice QuestionsLong Answer Type

45.

Sketch and explain clover leaf model of tRNA.

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 Multiple Choice QuestionsOne Word Answers

46. Who developed DNA fingerprinting technique.
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 Multiple Choice QuestionsShort Answer Type

47. Write a note on repair replication.
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48.

Write a note on messenger RNA.

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49. What is the role of m-RNA, t-RNA and rRNA in protein synthesis ?

Or

Why all the three RNAs are needed to synthesise a protein in a cell ?

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50. RNA was first genetic material, DNA evolved later on. Explain.
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