Number of $(approximately)$ genes in E. coli are
Number of $(approximately)$ genes in E. coli are
- A
$4000$
- B
$6000$
- C
$10000$
- D
$18000$
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The possibility of three letter genetic code was pointed out by
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The genes, which are confined to differential region of $Y$ chromosome only, are called
The genes, which are confined to differential region of $Y$ chromosome only, are called
- [AIIMS 1998]
Select the two correct statements out of the four $(i -iv)$ statements given below about lac operon.
$(i)$ Glucose or galactose may bind with the repressor and inactivate it.
$(ii)$ In the absence of lactose the repressor binds with the operator region.
$(iii)$ The zgene codes for permease.
$(iv)$ This was elucidated by Francois Jacob and Jacques Monod.
The correct statements are
Select the two correct statements out of the four $(i -iv)$ statements given below about lac operon.
$(i)$ Glucose or galactose may bind with the repressor and inactivate it.
$(ii)$ In the absence of lactose the repressor binds with the operator region.
$(iii)$ The zgene codes for permease.
$(iv)$ This was elucidated by Francois Jacob and Jacques Monod.
The correct statements are
- [AIPMT 2010]
The mean diameter of $DNA$ double helix is
The mean diameter of $DNA$ double helix is
Who discovered "Reverse transcription''
Who discovered "Reverse transcription''