Nursing quiz

Genetics Quiz

Genetics Quiz - 2

1 2 3 4 5

1. Variations occure during meosis due to:

A. Crossing over

B. Independent assortment

C. Linkage

D. Disjunction

Answer Key

2. Polygenic inheritance occures in:

A. Human eye colour and sickle cell anaemia

B. Hair pigment in mouse and tongue rolling in humans

C. Human height and skin colour

D. ABO blood group in human

Answer Key

3. Phenomenon of one gene controlling several phenotypes is;

A. Epistatsis

B. Pleiotropism

C. Codominance

D. Multiple allelism

Answer Key

4. A human male produces sperms with genotypes AB, Ab, aB, and ab in equal proportions. What is the genotype of the person?

A. AA Bb


C. Aa Bb

D. Aa BB

Answer Key

5. Gene for right handedness is dominant over the gene for left handedness. Most probable genotypes of two right handed parents with left handed child is;

A. RR x rr

B. rr x Rr

C. RR x Rr

D. Rr x Rr

Answer Key

6. Genes present on the same locus but having different expressions are:

A. Multiple alleles

B. Polygenes

C. Oncogenes

D. Codominants

Answer Key

7. Individuals with blood group A has

A. Antigen A, antibody B

B. Antigen B, antibody A,

C. Antigen A, antibody b

D. Antigen A, no antibody.

Answer Key

8. Ratio of 9:3:3:1 is due to:

A. Independent assortment of genes

B. Segregation of charecters

C. Crossing over of chromosomes

D. Homologous pairing between chromosomes

Answer Key

9. An O-group child cannot have parents of blood groups:

A. B and B

B. A and B

C. O and O

D. AB and O

Answer Key

10. Genes expressed only in homozygous state are:

A. dominant

B. recessive

C. codominant

D. mutated

Answer Key

Answer Key
1. A
2. C
3. B
4. C
5. D
6. A
7. C
8. A
9. D
10. B
  1. Nettina, Sandra M.; Mills, Elizabeth Jacqueline. Lippincott Manual of Nursing Practice, 8th Edition. Copyright ©2006 Lippincott Williams & Wilkins.
  2. Bhatti K. Dinesh Companion to Biology. S. Dinesh & Co. New Delhi, 2009.
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