In the $DNA$ molecule,
- Athe proportion of adenine in relation to thymine varies with the organism
- Bthere are two strands which run antiparallel; one in $5' \to 3'$ direction and other in $3' \to 5'$
- Cthe total amount of purine nucleotides and pyrimidine nucleotides is not always equal
- Dthere are two strands which run parallel in the $5' \to 3'$ direction.
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What background information did Watson and Crick have available for developing a model of $DNA$? What was their contribution?
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View SolutionThe genetic material in the bacterium $Escherichia$ $coli$ $(E. coli)$ is:
The length of $DNA$ helix in a typical nucleosome is
The antiparallel nature of the $DNA$ molecule means that ......
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View SolutionRead the following statements and choose the set of correct statements:
$(a)$ Euchromatin is loosely packed chromatin
$(b)$ Heterochromatin is transcriptionally active
$(c)$ Histone octamer is wrapped by negatively charged $DNA$ in nucleosome
$(d)$ Histones are rich in lysine and arginine
$(e)$ $A$ typical nucleosome contains $400 \ bp$ of $DNA$ helix
Choose the correct answer from the options given below:
$(a)$ Euchromatin is loosely packed chromatin
$(b)$ Heterochromatin is transcriptionally active
$(c)$ Histone octamer is wrapped by negatively charged $DNA$ in nucleosome
$(d)$ Histones are rich in lysine and arginine
$(e)$ $A$ typical nucleosome contains $400 \ bp$ of $DNA$ helix
Choose the correct answer from the options given below:
MediumNEET 2022
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