Principles of Inheritance and Variation PYQs - Last 10 Years

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Last 10 Years Principles of Inheritance and Variation Questions

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1Principles Of Inheritance And Variation

If you cross two heterozygous plants, how many of the all possible $F_1$ offsprings will also be heterozygous?

2Principles Of Inheritance And Variation

Following table shows ABO blood group in man. Observe carefully and identify 'P', 'Q' and ' R '.

3Principles Of Inheritance And Variation

In a dihybrid cross, $9: 3: 3: 1$ ratio, denotes that ___________.

4Principles Of Inheritance And Variation

Sexually reproduced offsprings tend to differ from their parents. This is known as __________

5Principles Of Inheritance And Variation

Which of the following statements are correct regarding chromosomal basis of sex determination?
i. The mechanism of sex determination in insect is XX - XO type.
ii. In honey-bee, haplo-diploid type of sex determination is observed.
iii. Hum...

6Principles Of Inheritance And Variation

What is the probability of producing a colourblind son if a colourblind male marries a normal visioned female?

7Principles Of Inheritance And Variation

A large population is showing random mating and not undergoing any evolutionary change. If frequency of allele A is 0.6 , then find out the percentage of homozygous recessive and heterozygous organisms respectively?

8Principles Of Inheritance And Variation

Which one of the following is NOT a sex linked disorder?

9Principles Of Inheritance And Variation

Non-disjunction of X - chromosome during meiosis leads to __________

10Principles Of Inheritance And Variation

Which one of the following is an important symptom of haemophilia?

11Principles Of Inheritance And Variation

Red (RR) flowered plant of Mirabilis is crossed with white (rr) flowered plant. All the offsprings in $\mathrm{F}_1$ generation are pink ( Rr ). This is an indication that the ' R ' gene is __________

12Principles Of Inheritance And Variation

Given below are two statements:
Statement I - Back cross is the crossing of $F_1$ hybrid with one of the two parents from which they were derived.
Statement II - Test cross involves the crossing of $F_1$ - hybrid with its homozygous recessi...

13Principles Of Inheritance And Variation

Match the disorder in column I with their nature in column II.

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14Principles Of Inheritance And Variation

Monohybrid crosses are useful in demonstrating which of the following laws of inheritance suggested by Mendel?

15Principles Of Inheritance And Variation

Which one of the following is an EXCEPTION to the generalization made by Mendel on the basis of his experiments on garden pea plant?

16Principles Of Inheritance And Variation

Which of the following statements are correct?

i. $X$ chromosome has large amount of euchromatin.
ii. heterochromatin is genetically inert.
iii. Both X and Y chromosomes are homologous.
iv. Crossing over does not take place in sex chromos...

17Principles Of Inheritance And Variation

Observe the given figure of Morgan's experiment for yellow body and white eyed female Drosophila crossed with brown body and red eyed male Drosophila. What will be the percentage of parental type in $F_2$ generation?

18Principles Of Inheritance And Variation

A type of chromosomal aberration, in which there is no loss or gain of gene complement of the chromosome is $\qquad$ .

19Principles Of Inheritance And Variation

Choose the correct statement(s) with respect to Down's syndrome
i. Down's syndrome results from non-disjunction of $21^{\text {st }}$ chromosome during gamete formation.
ii. Down's syndrome is a sex chromosomal disorder observed in immature...

20Principles Of Inheritance And Variation

Non-disjunction of X-chromosomes during meiosis in the formation of ovum leads to _________ syndrome.

21Principles Of Inheritance And Variation

Chromosomal basis of inheritance suggested by Sutton and Boveri is based on ________

22Principles Of Inheritance And Variation

Test cross is used to confirm $\qquad$ .