Chapter 22 - Variation and Genetics -3

Chapter 22 - Variation and Genetics -3

1. Deuteranopia is _______ blindness:

a) True colour
b) Red
c) Green
d) Blue

2. Tongue rolling ability in humans is due to a single _______ gene:

a) Codominant
b) Dominant
c) Recessive
d) Overdominant

3. Melanocyte failure in cat causes both phenotypes white fur and _______:

a) Deafness
b) Blindness
c) Pigmentation
d) None of the above

4. If a man of M blood group marries a woman of N blood group all their children will have.

a) O blood group
b) M blood group
c) MN blood group
d) N blood group

5. DNA stores all sorts of biological information coded in the sequence of its bases in a ______ order:

a) Criss cross
b) Zig zag
c) Linear
d) Spiral

6. When two independent events are occurring simultaneously like in Dihybrid cross the ratio of each joint phenotypic combination can be obtained by multiplying the probabilities of individual phenotypes. It is called _______:

a) Product rule
b) Principle rule
c) Genetic rule
d) Hereditary rule

7. Gene

a) Gene Complement
b) 3 : 1
c) DNA
d) 1 : 3 : 1

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