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Question 1 of 15
1. Question
During DNA replication, Okazaki fragments used to elongate
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Question 2 of 15
2. Question
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Question 3 of 15
3. Question
Which of the following statements is not true of two genes that show 50% recombination frequency?
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Question 4 of 15
4. Question
There are special proteins that help to open up DNA double helix in front of the replication fork. These proteins are
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Question 5 of 15
5. Question
Spliceosomes are not found in cells of
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Question 6 of 15
6. Question
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Question 7 of 15
7. Question
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Question 8 of 15
8. Question
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Question 9 of 15
9. Question
If there are 999 bases in an RNA that code for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered?
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Question 10 of 15
10. Question
Which of the following rRNAs acts as structural RNA as well as ribozyme in bacteria?
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Question 11 of 15
11. Question
A geneticist isolates a gene for a specific trait under study, she also isolates the corresponding mRNA. Upon comparison, the mRNA is found to contain 1,000 fewer bases than the DNA sequence. Did the geneticist isolate the wrong DNA ?
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Question 12 of 15
12. Question
Read the following statements and choose the correct option.
(i)Nitrogenous base in linked to the pentose sugar through a N-glycosidic linkage.
(ii)Phosphate group is linked to 5¢–OH of a nucleoside through phosphoester linkage.
(iii)Two nucleosides are linked through 3¢–5¢Nglycosidic linkage.
(iv)Negatively charged DNA is wrapped around positively charged histone octamer to form nucleosome.
(v)The chromatin that is more densely packed and stains dark is called euchromatin.
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Question 13 of 15
13. Question
Anticodon is
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Question 14 of 15
14. Question
Escherichia coli fully labelled with 15N is allowed to grow in 14N medium. The two strands of DNA molecule of the first generation bacteria have
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Question 15 of 15
15. Question
‘Lac operon’ in E. coli, is induced by
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