Principles Of Inheritance And Variation! Try Out The Quiz

15 Questions | By Jagranjosh | Updated: Mar 21, 2022 | Attempts: 3081

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From Biology, we understand that as human beings, we inherit some genes from our parents by conception. The details of this concept may seem difficult but practice makes it easier. Try out the quiz on the inheritance principles below.

Questions and Answers

1.

The factors for a character will segregate equally and pass on to each gamete uncontaminated. Guess the statement belongs to
- A.
  
  Law of segregation
- B.
  
  Law of independent assortment
- C.
  
  Principle of dominance
- D.
  
  Principle of unit character
2.

The process of removing stamens of a flower during hybridization is called
- A.
  
  Hybridization
- B.
  
  Emasculation
- C.
  
  Sterilization
- D.
  
  Crossing
3.

Check the following cross gives a typical dihybrid test cross ratio?
- A.
  
  YyRr x YyRr
- B.
  
  YyRr x yyrr
- C.
  
  Yyrr x yyRr
- D.
  
  Yyrr x Yyrr
4.

ABO - blood group in man is under the control of
- A.
  
  Multiple alleles
- B.
  
  Multiple cells
- C.
  
  Sex-linked genes
- D.
  
  Y-linked genes
5.

Genes of a flower colour in Mirabilis jalapa show incomplete dominance. In a cross between red and white flowered plant, all the F, plants are pink flowered. If these plants are self pollinated, the phenotypic ratio in the F 2 generation will be
- A.
  
  9 : 3 : 3 : 1
- B.
  
  3 : 1
- C.
  
  1 : 1
- D.
  
  1 : 2 : 1
6.

Three children of a family have blood groups A, AB and B. What could be the genotypes of their parents?
- A.
  
  I^A i and I^B i
- B.
  
  I^A I^B and i i
- C.
  
  I^B I^B and I^AI^A
- D.
  
  I^A I^A and i i
7.

Inheritance of skin colour in human is an example of
- A.
  
  Mendelian inheritance
- B.
  
  Monogenic inheritance
- C.
  
  Complementary genes
- D.
  
  Polygenic inheritance
8.

In hemophilia Patients
- A.
  
  Erythrocytes are nucleated
- B.
  
  Erythrocytes are absent
- C.
  
  Blood clotting is delayed due to the lack of certain clotting factors
- D.
  
  Platelets are absent
9.

If all the sons of a couple are colour blind, then, the
- A.
  
  Mother is colour blind
- B.
  
  Mother is normal and father is colour blind
- C.
  
  Mother is a carrier and father is colour blind
- D.
  
  Mother is a carrier and father is normal
10.

Which of the following is associated with Y chromosome?
- A.
  
  Haemophilia
- B.
  
  Colour blindness
- C.
  
  Hypertrichosis of ears
- D.
  
  Night blindness
11.

Epicanthus is symptom of
- A.
  
  Haploidy
- B.
  
  Turner's syndrome
- C.
  
  Down's syndrome
- D.
  
  Heteroploidy
12.

Klinefelter's syndrome has
- A.
  
  44 + XXY
- B.
  
  44 + XY
- C.
  
  45 + XY
- D.
  
  66 + XXY
13.

Cause of Down's syndrome is
- A.
  
  Crossing over
- B.
  
  Iinkage
- C.
  
  Sex linked inheritance
- D.
  
  Nondisjunction of chromosomes
14.

Trisomy has chromosome complement of
- A.
  
  2n – 1
- B.
  
  2n – 1 – 1
- C.
  
  2n + 1 + 1
- D.
  
  2n + 1
15.

Father’s blood group is A and mother’s blood group is O. What will be the not possible blood groups for child
- A.
  
  B, AB
- B.
  
  O,B
- C.
  
  AB, O
- D.
  
  A