1 |
Eco. R is a commonly used |
Gene
Restriction enzyme
Bacteria
Bacteriophage
|
2 |
The two different places of DNA joined together is called as. |
Dimeric DNA
Chimeric DNA
Trimeric DNA
Tetrameric DNA
|
3 |
The enzyme which joins the two pieces of DNA is |
DNA polymerase -I
DNA ligase
Restriction endonuclease
DNA polymerase -I
|
4 |
Which enzyme acts as molecular scissors. |
DNA ligase
DNA polymerase
RNA polymerase
Restriction endonuclease
|
5 |
Inheritance of skin colour in man is controlled by eight pairs of genes , which are: |
Linked
Codominent
Multiple alleles
Assorting independently
|
6 |
When expression of a biological character is observed in variable intensity, it is due to the efect of: |
Multiple alleles
Codominance
Epitasis
Polygenic inheritance
|
7 |
What are the penotypes of the parent of a colour-blind son and non-carries daughter with normal colour vision? |
<b>FATHER MOTHER</b><div><div>Carrier Normal</div></div>
<b>FATHER MOTHER</b><div>Colour blind Carrier</div>
<b>FATHER MOTHER</b><div>Normal Carrier</div>
<b>FATHER MOTHER</b><div>Normal Colour- blind</div>
|
8 |
Two parents, each of blood groups A, have a daughter of blood group O. what is the probality that their next child who has blood gorup O? |
0.125
0.25
0.50
0.75
|
9 |
Awoman with normal colour vision, whose father was red-green colour blind, married a red-green colour-blind man. What is the probality of her first-born child being red-green colour blind? |
1.0
0.75
0.50
0.025
|
10 |
How many different kinds of the gametes will be formed by an ndividual , who is hetrozygous for four gene pairs: |
8
16
20
30
|
11 |
A man bolld group A marries a women of blood goroup B and they have one child. Which one of the following statements abo ut the child's blood is correct? |
It could be group A only
It could be group AB only
It could be group A or Group B only
It could be any of the groups A,B,AB, O
|
12 |
The number of linkage group in man is: |
02
23
46
92
|
13 |
Chances for a son or daughter in human birth are: |
3:1 between son and daughter
1:3 between son and daughter
1:1 between son and daughter
None of them
|
14 |
Bolld group B phenotype contains anti-A antiboides in the serum and agglutinates any RBC with antigen: |
AB
O
A
B
|
15 |
An ezyme that can be used to treat a human Iysosome storage disease is |
B-galactosidase
a-galactosidase
Glucosidase
Invertase
|
16 |
PCR takes its name from |
RNA polymerase
DNA polymerase
DNA ligase
Endonuclease
|
17 |
It is estimated that human genome could take an encyclopaedia of 200 volumes each with |
10 pages
100 pages
1000 pages
10,000 pages
|