KC+CET PYQs for Principles of inheritance and Variation with Solutions: Practice KCET Previous Year Questions

Updated on - Feb 16, 2026

Principles of inheritance and Variation is an important topic in the Biology section in KCET exam. Practising this topic will increase your score overall and make your conceptual grip on KCET exam stronger.

This article gives you a full set of KCET PYQs for Principles of inheritance and Variation with explanations for effective preparation. Practice of KCET Biology PYQs including Principles of inheritance and Variation questions regularly will improve accuracy, speed, and confidence in the KCET 2026 exam.

KCET PYQs for Principles of inheritance and Variation with Solutions

1.
In garden pea, round shape of seeds is dominant over wrinkled shape. A pea plant heterozygous for round shape of seed is selfed and 1600 seeds produced during the cross are subsequently germinated. How many seedlings would have the parental phenotype ?
- 1600
- 800
- 400
- 1200
View Solution
2.
If father shows normal genotype and mother shows a carrier trait for haemophilia:
- All the female offspring will be normal.
- All the female offspring will be carriers.
- A male offspring has 50% chances of active disease.
- Female offspring has probability of 50% to have active disease.
View Solution
3.
A man with blood group $A$ marries a woman having blood group $B$. The maximum possible blood groups among their progenies are
- A, B
- A, B, AB, O
- AB only
- A, B, AB
View Solution
4.
Mutation can not change
- Enzyme
- DNA
- RNA
- Environment
View Solution
5.
From the following pedigree chart of a family, one can make an analysis that,
- It is an autosomal recessive trait.
- It is an autosomal dominant trait.
- It is an allosomal dominant trait.
- It is an allosomal recessive trait.
View Solution
6.
Four children belonging to same parents have the following blood groups A, B, AB and O. Hence the genotypes of the two parents are
- Both parents are homozygous for 'A' group
- One parent is homozygous for 'A' and another parent is homozyous for 'B'
- One parent is heterozygous for 'A' and another parent is heterozygous for 'B'
- Both parents are homozygous for 'B' group
View Solution
7.
ABO blood type in man is an example of 1. Pleiotropy 2. Incomplete dominance 3. Co-dominance 4. Multiple allelism Select the code for the correct answer from the options given below :
- 1, 2 and 3 only
- 1,3 and 4 only
- 3 and 4 only
- 1, 2 and 4 only
View Solution
8.
A dihybrid test cross yielding a result of 1 : 1 : 1 : 1 ratio is indicative of
- Homozygous condition of the $F_1$ dihybrid
- 4 different types of gametes produced by the $F_1$ dihybrid
- 4 different types of gametes produced by the $P_1$ parent
- 4 different types of $F_1$ generation dihybrids
View Solution
9.
A pure breeding pea plant with round yellow seeds was crossed with pea plant having wrinkled green seeds. On selfing of $F_1$ hybrid of his cross $64$ progenies were obtained in $F_2$ generation. Find out the number of $F_2$ progenies showing non-parental characters.
- 12
- 24
- 36
- 4
View Solution
10.
Replacement of which one of the following nucleotides in the Hbb gene causes sickle cell anaemia ?
- A to T
- A to U
- U to A
- C to G
View Solution
11.
In a typical Mendelian cross which is a dihybrid cross, one parent is homozygous for both dominant traits and another parent is homozygous for both recessive traits. In the $f_2$ generation, both parental combinations and recombinations appear. The phenotypic ratio of parental combinations to recombinations is ..................
- 10:06
- 9:07
- 12:04
- 15:01
View Solution
12.
In ABO blood groups, how many phenotypes are found ?
- 1
- 4
- 6
- 8
View Solution
13.
A condition where a certain gene is present in only a single copy in a diploid cell is called.
- Monogamous
- Heterozygous
- Hemizygous
- Homozygous
View Solution

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KCET PYQs for Principles of inheritance and Variation with Solutions

1.In garden pea, round shape of seeds is dominant over wrinkled shape. A pea plant heterozygous for round shape of seed is selfed and 1600 seeds produced during the cross are subsequently germinated. How many seedlings would have the parental phenotype ?

2.If father shows normal genotype and mother shows a carrier trait for haemophilia:

3.A man with blood group $A$ marries a woman having blood group $B$. The maximum possible blood groups among their progenies are

4.Mutation can not change

5.From the following pedigree chart of a family, one can make an analysis that,

6.Four children belonging to same parents have the following blood groups A, B, AB and O. Hence the genotypes of the two parents are

7.ABO blood type in man is an example of 1. Pleiotropy 2. Incomplete dominance 3. Co-dominance 4. Multiple allelism Select the code for the correct answer from the options given below :

8.A dihybrid test cross yielding a result of 1 : 1 : 1 : 1 ratio is indicative of

9.A pure breeding pea plant with round yellow seeds was crossed with pea plant having wrinkled green seeds. On selfing of $F_1$ hybrid of his cross $64$ progenies were obtained in $F_2$ generation. Find out the number of $F_2$ progenies showing non-parental characters.

10.Replacement of which one of the following nucleotides in the Hbb gene causes sickle cell anaemia ?

12.In ABO blood groups, how many phenotypes are found ?

13.A condition where a certain gene is present in only a single copy in a diploid cell is called.

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1.
In garden pea, round shape of seeds is dominant over wrinkled shape. A pea plant heterozygous for round shape of seed is selfed and 1600 seeds produced during the cross are subsequently germinated. How many seedlings would have the parental phenotype ?

2.
If father shows normal genotype and mother shows a carrier trait for haemophilia:

3.
A man with blood group $A$ marries a woman having blood group $B$. The maximum possible blood groups among their progenies are

4.
Mutation can not change

5.
From the following pedigree chart of a family, one can make an analysis that,

6.
Four children belonging to same parents have the following blood groups A, B, AB and O. Hence the genotypes of the two parents are

7.
ABO blood type in man is an example of 1. Pleiotropy 2. Incomplete dominance 3. Co-dominance 4. Multiple allelism Select the code for the correct answer from the options given below :

8.
A dihybrid test cross yielding a result of 1 : 1 : 1 : 1 ratio is indicative of

9.
A pure breeding pea plant with round yellow seeds was crossed with pea plant having wrinkled green seeds. On selfing of $F_1$ hybrid of his cross $64$ progenies were obtained in $F_2$ generation. Find out the number of $F_2$ progenies showing non-parental characters.

10.
Replacement of which one of the following nucleotides in the Hbb gene causes sickle cell anaemia ?

12.
In ABO blood groups, how many phenotypes are found ?

13.
A condition where a certain gene is present in only a single copy in a diploid cell is called.