Given below is the diagram of a bacteriophage in which one of the options, all the four parts A, B, C and D are correct?
A |
B |
C |
D |
Tail fibres |
Head |
Sheath |
Collar |
A |
B |
C |
D |
Sheath |
Collar |
Head |
Tail fibres |
A |
B |
C |
D |
Head |
Collar |
Sheath |
Tail fibres |
A |
B |
C |
D |
Head |
Collar |
Sheath |
Tail fibres |
C.
A |
B |
C |
D |
Head |
Collar |
Sheath |
Tail fibres |
Plasmids are the extrachromosomal DNA found in bacterial cells. These are commonly used as vectors in genetic engineering programmes because these have the capacity of binding with eukaryotic DNA.
A bacteriophage is a virus that is parasitic within a bacterium. These also, are the important tools in genetic engineering s cloning vectors.
The lac operon consists of
four regulatory genes only
one regulatory gene and three structural genes
two regulatory genes and two structural genes
two regulatory genes and two structural genes
Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character.
The female parent is heterozygous
The parents could not have a had a normal daughter for this character
The trait under study could not be colour blindness
The trait under study could not be colour blindness
Study the cycle shown below and select the option which gives correct words for all the four blanks A, B, C and D.
A |
B |
C |
D |
Nitrification |
Ammonification |
Animals |
plants |
A |
B |
C |
D |
Dentirificiation |
Ammonification |
Plants |
Animals |
A |
B |
C |
D |
Nitrification |
Denitrification |
Animals |
Plants |
A |
B |
C |
D |
Nitrification |
Denitrification |
Animals |
Plants |