EASY
10th CBSE
IMPORTANT
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A trait in an organism is influenced by 

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Important Questions on Heredity and Evolution

MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE BIOLOGY For Class X>Chapter 4 - Heredity and Evolution>EXERCISE>Q 17
Select the group which shares maximum number of common characters 
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE BIOLOGY For Class X>Chapter 4 - Heredity and Evolution>EXERCISE>Q 18
According to the evolutionary theory, the formation of a new species is generally due to
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE BIOLOGY For Class X>Chapter 4 - Heredity and Evolution>EXERCISE>Q 19
From the given list below, select the character which can be acquired but not inherited 
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE BIOLOGY For Class X>Chapter 4 - Heredity and Evolution>EXERCISE>Q 20
The two version of a trait (character) which are brought in by the male and female gametes are situated on
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE BIOLOGY For Class X>Chapter 4 - Heredity and Evolution>EXERCISE>Q 21

Select the statements that describe characteristics of genes

(i) Genes are specific sequence of bases in a DNA molecule.

(ii) A gene does not code for proteins. 

(iii) In individuals of a given species, a specific gene is located on a particular chromosome.

(iv) Each chromosome has only one gene.

MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE BIOLOGY For Class X>Chapter 4 - Heredity and Evolution>EXERCISE>Q 22

In peas, a pure tall plant (TT) is crossed with a short plant (tt). The ratio of pure tall plants to short plants in F2 is

EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE BIOLOGY For Class X>Chapter 4 - Heredity and Evolution>EXERCISE>Q 23
The number of pairs of sex chromosomes in the zygote of humans is 
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE BIOLOGY For Class X>Chapter 4 - Heredity and Evolution>EXERCISE>Q 24
The theory of evolution of species by natural selection was given by