wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

Biology MCQ class 12th

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

What is the branch of biology that deals with the inheritance and variation of characters from parents to offspring?

a)

Ecology

b)

Genetics

c)

Physiology

d)

Botany

2.

Who conducted hybridisation experiments on garden peas and proposed the laws of inheritance in living organisms?

a)

Alfred Wallace

b)

Charles Darwin

c)

Louis Pasteur

d)

Gregor Mendel

3.

What is the process by which characters are passed on from parent to progeny?

a)

Evolution

b)

Selection

c)

Mutation

d)

Inheritance

4.

In Mendel's experiments, what is the genotype of a true-breeding tall pea plant?

a)

TT

b)

tt

c)

Tt

d)

YY

5.

What is the phenotype of a plant with the genotype Tt according to Mendel's experiments?

a)

Tall

b)

Dwarf

c)

In-between height

d)

Green

6.

In the ABO blood grouping system, which blood type is controlled by the gene I^A I^A or I^A i?

a)

Type B

b)

Type O

c)

Type A

d)

Type AB

7.

What is the genotypic ratio in the F2 generation of a monohybrid cross according to Mendel's experiments?

a)

2:1

b)

3:1

c)

1:2:1

d)

9:3:3:1

8.

Which scientists independently rediscovered Mendel's results on the inheritance of characters in 1900?

a)

Watson and Crick

b)

Sutton and Boveri

c)

de Vries, Correns, and von Tschermak

d)

Morgan and colleagues

9.

What did Walter Sutton and Theodore Boveri use to explain Mendel's laws?

a)

Ribosomes

b)

Chromosomes

c)

Mitochondria

d)

Enzymes

10.

Which organism did Thomas Hunt Morgan work with to experimentally verify the chromosomal theory of inheritance?

a)

Fruit Flies

b)

Mice

c)

Fungi

d)

Bacteria

11.

What is the law that states 'when two pairs of traits are combined in a hybrid, segregation of one pair of characters is independent of the other pair of characters'?

a)

Law of Co-dominance

b)

Law of Segregation

c)

Law of Independent Assortment

d)

Law of Dominance

12.

In a dihybrid cross, what is the genotypic ratio of the offspring according to Mendel's experiments?

a)

2:1

b)

1:1

c)

3:1

d)

9:3:3:1

13.

What did Sutton and Boveri argue would lead to the segregation of a pair of factors they carried?

a)

Ribosomes

b)

Chromosomes

c)

Enzymes

d)

Mitochondria

14.

What did Thomas Hunt Morgan work with to experimentally verify the chromosomal theory of inheritance?

a)

Fungi

b)

Fruit Flies

c)

Mice

d)

Bacteria

15.

What did Walter Sutton and Theodore Boveri use to explain Mendel's laws?

a)

Mitochondria

b)

Ribosomes

c)

Enzymes

d)

Chromosomes