113 + Interview Questions in GENETICS IN GENERAL AWARENESS Page 1 InterviewSolution

1.	[A]: Metacentric chromosomes are V-shaped [R]: In these chromosomes, the centromere occurs in the centre forming two equal arms.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

Discussion

2.	[A]: In paracentric inversions the centromere is outside the inverted segment. [R]: In pericentric inversion, the inverted seg- ment includes the centromereA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - B

Discussion

3.	[A]: Domestication is a type of plant breeding. [R]: Selection is the basis for the improve- ment of crops through prant breeding.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

Discussion

4.	[A]: Artitical selection is done only in animal breeding. [R]: Artifical selection is done in animal breeding only.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - D

Discussion

5.	[A]: Genetic engineering is the use of tech- nology to alter the genome of a cell for the benefit of we people. [R]: Here foreign gene is inserted into the cell to get desirable productA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

Discussion

6.	[A]: DNA code is copied in the synthesis of tRNA. [R]: tRNA moves out of the nucleus and after attaching on ribosomes form the templateA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - D

Discussion

7.	[A]: DNA synthesis occurs in `G_1 and G_2` peri- ods of cell cycle. [R]: During `G_1 and G_2` phase the DNA con- tents become double.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - D

Discussion

8.	Write a brief biography of Mendel.
Answer» Mendel was bom on 22nd July 1822 in Silision village of Heizendarf province in Austria. After taking a degree in philosophy (1842), he joined as a priest in a church at Brunn in Austria. He began his study on garden pea in church’s garden and continued his studies for seven years. He presented his findings in the form of research paper in front of Brunn Society of Natural History. His paper was published in the annual magazine of the society.

Discussion

9.	Law of segregation is based on the fact that the alleles do not show any blending
Answer» Correct Answer - True

Discussion

10.	What are alleles?
Answer» Two forms of genes which control any one trait are called alleles or allelomorphs.

Discussion

11.	Briefly explain dihybrid cross.
Answer» When two pairs of contrasting traits are studied in a cross, it is called dihybrid cross. For example; when a pea plant is studied for its flower’s colour and pod colour it is a dihybrid cross.

Discussion

12.	What term did Mendel use for genes? Where are the genes located?
Answer» Mendel used the term ‘factors’ for genes. Genes are portions of DNA which code for a single protein.

Discussion

13.	Mendel belonged to which country?
Answer» Mendel belonged to Austria country.

Discussion

14.	[A]: According to Hardy-Weinburg law both gene frequencies and genotype frequencies will remain constant from generation to gen- eration in an infinitely large interbreeding population. [R]: Alleles segregating in a population tend to establish an equilibrium with reference to each other, thus maintain both frequencies constant.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

Discussion

15.	Mendel experiments had a large sampling size.
Answer» Correct Answer - True

Discussion

16.	Multiple alleles can be found only when population studies are made.
Answer» Correct Answer - True

Discussion

17.	What is the difference between phenotype and genotype?
Answer» The set of observable traits is called phenotype, while the genetic constitution is called genotype. Two plants with the same phenotype may have different genotype.

Discussion

18.	[A]: The chromosomes of plants are larger than animals. [R]: The chromosomes of monocots are larger than dicotsA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - B

Discussion

19.	[A]: Recombinant DNA contains DNA from two or more sources. [R]: Plasmids are small extra rings of DNA in bacteria that carry genes not present in the bacterial chromosomeA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - B

Discussion

20.	Mendel could not provide any physical proof for the existence of factor.
Answer» Correct Answer - True

Discussion

21.	The gene, which affects many phenotypes.
Answer» Correct Answer - Pleiotropic gene

Discussion

22.	Which law of Mendel cannot be explained by monohybrid cross?
Answer» Law of independent assortment.

Discussion

23.	Chromosomes as well as genes occurs in pairs.
Answer» Correct Answer - True

Discussion

24.	Name two animals which have nineteen pairs of chromosomes.
Answer» Lion, tiger, domestic cat (Any two)

Discussion

25.	[A): Prokaryotic cells do not contain repres- sor protein [R]: They do not function as genetic valves by combining with specific genes to turn on their activity.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - D

Discussion

26.	[A]: Plasmids are small accessory rings of DNA found in some bacteria that carry genes. [R]: Plasmids that are used as a vector have been removed from bacteria and have had a foreign gene inserted into themA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

Discussion

27.	During spermatogenesis in human males, ..............type of gametes are produced.
Answer» Correct Answer - two

Discussion

28.	In a monohybrid cross, we study ..........character.
Answer» Correct Answer - One

Discussion

29.	[A]: Chromosomes appear longer during te-lophase. [R]: The term chromosome was coined by Waldeyer.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - B

Discussion

30.	Holandric genes are llocated on
Answer» Correct Answer - Y-chromosome

Discussion

31.	Behaviour of Chromosomes was parallel to the behaviour of genes explained by..........
Answer» Correct Answer - Sutton and Boveri

Discussion

32.	Genes and chromosomes are found in pairs in__________cells.
Answer» Correct Answer - Diploid

Discussion

33.	[A]: Genes confined to differential region of homologous chromosomes are called holandric genes. [R]: Genes confined to homologous region of Y chromosomes only are celled Holandric genes.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - D

Discussion

34.	[A]: Neurospora is an ideal genetic material for research. [R]: Because of its suitability in the studies of genetics contained within it.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

Discussion

35.	After monohybrid cross, what is the phenotypic ratio in F2 generation? (a) 3:1 (b) 1:2:1 (c) 1:3:1 (d) 3:2:1
Answer» Correct answer is (a) 3 :1

Discussion

36.	Which one is a possible progeny in F2 generation of pure bred tall plant with round seed and short plant with wrinkled seeds? (a) Tall plant with round seeds (b) Tall plant with wrinkled seeds (c) Short plant with round seed (d) All of the above
Answer» (d) All of the above

Discussion

37.	Which of the following inheritable traits was not selected by Mendel for his experiments? (a) Colour of roots (b) Colour of flowers (c) Colour of seeds (d) Colour of pods
Answer» (a) Colour of roots

Discussion

38.	Mendel selected how many inheritable pairs of traits for his experiments? (a) 34 (b) 2 (c) 12 (d) 7
Answer» Correct answer is (d) 7

Discussion

39.	Who is called as father of genetics?
Answer» Mendel is called as father of genetics.

Discussion

40.	Define Genetics. What did Mendel’s contributes to the genetics?
Answer» The science of heredity and variation is called Genetics. Mendel conducted breeding experiments in a plant called garden pea (pisum sativum) with contrasting pair of characters, found that only one character of the pairs appeared in the first generation but both the characters appeared in the subsequent generation. On the basis of these results of his experiments he put forth the various principals of inheritance. He also suggested that each character is controlled by a pair of factors which are now called as genes.

Discussion

41.	Among the following which is not one of the direct conclusions that can be drawn from Mendel’s experiment? (a) Only one parental trait is expressed in F1 generation. (b) Two copies of each trait is inherited in sexually reproducing orgainsm (c) For recessive trait to be expressed, both copies should be identical. (d) Natural selection can alter frequency of an inherited trait.
Answer» (d) Natural selection can alter frequency of an inherited trait.

Discussion

42.	Which trait will contrast with green colour? (a) Tall plant (b) Yellow colour (c) Round seed (d) Wrinkled seed
Answer» (b) Yellow colour

Discussion

43.	(i) What is genetics? (ii) Give the common name of the plant on which Mendel performed its experiments. (iii) What for did Mendel use the term factors and what are these factors called now? (iv) Green and red coloured seeds are recessive and dominant trait respectively. Out of F1 and F2, in which generation will the green seed appear, if both parents are not hybrid.Green and red? (v) What is monohybrid cross?
Answer» (i) Science which deals with the study of heredity and variations is called genetic. (ii) Pea plant. (iii) Mendel used the term factors for ‘genes’. (iv) F₂generation (v) When inheritance of only one character is studied during hybridisation is a called monohybrid cross.

43.

(i) What is genetics? (ii) Give the common name of the plant on which Mendel performed its experiments. (iii) What for did Mendel use the term factors and what are these factors called now? (iv) Green and red coloured seeds are recessive and dominant trait respectively. Out of F1 and F2, in which generation will the green seed appear, if both parents are not hybrid.Green and red? (v) What is monohybrid cross?

Answer»

(i) Science which deals with the study of heredity and variations is called genetic.

(ii) Pea plant.

(iii) Mendel used the term factors for ‘genes’.

(iv) F₂generation

(v) When inheritance of only one character is studied during hybridisation is a called monohybrid cross.

Discussion

44.	Mendel conducted his experiments on which plants?
Answer» Mendel conducted his experiments on Pea plants.

Discussion

45.	Name two human traits that show variations.
Answer» Colours of eyes and shape of external ears.

Discussion

46.	What is a dominant trait?
Answer» A trait which expresses itself in F₁generation is called the dominant trait.

Discussion

47.	Who rediscovered the Mendel’s laws?
Answer» Hugo de Vries, Carl Correns and Erick von Tschermak

Discussion

48.	[A]: Comparative biochemistry provides a strong evidence in favour of a common an- cestry of living beings. [R]: Genetic code is universalA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

Discussion

49.	[A]: Lampbrush chromosomes arf3 found in the oocytes of certain animals during the prophase of meiosis. Such chromosomes consist of two central strands along which fine loops extend laterally. [R]: The loops are thought to be active re- gions of RNA synthesisA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - B

Discussion

50.	Which term is used for transfer of genetic traits from one generation to next generation?
Answer» Inheritance term is used for transfer of genetic traits from one generation to next generation.

Discussion

Explore topic-wise InterviewSolutions in .

Write a brief biography of Mendel.

Law of segregation is based on the fact that the alleles do not show any blending

What are alleles?

Briefly explain dihybrid cross.

What term did Mendel use for genes? Where are the genes located?

Mendel belonged to which country?

Mendel experiments had a large sampling size.

Multiple alleles can be found only when population studies are made.

What is the difference between phenotype and genotype?

Mendel could not provide any physical proof for the existence of factor.

The gene, which affects many phenotypes.

Which law of Mendel cannot be explained by monohybrid cross?

Chromosomes as well as genes occurs in pairs.

Name two animals which have nineteen pairs of chromosomes.

During spermatogenesis in human males, ..............type of gametes are produced.

In a monohybrid cross, we study ..........character.

[A]: Chromosomes appear longer during te-lophase. [R]: The term chromosome was coined by Waldeyer.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Holandric genes are llocated on

Behaviour of Chromosomes was parallel to the behaviour of genes explained by..........

Genes and chromosomes are found in pairs in__________cells.

After monohybrid cross, what is the phenotypic ratio in F2 generation? (a) 3:1 (b) 1:2:1 (c) 1:3:1 (d) 3:2:1

Which one is a possible progeny in F2 generation of pure bred tall plant with round seed and short plant with wrinkled seeds? (a) Tall plant with round seeds (b) Tall plant with wrinkled seeds (c) Short plant with round seed (d) All of the above

Which of the following inheritable traits was not selected by Mendel for his experiments? (a) Colour of roots (b) Colour of flowers (c) Colour of seeds (d) Colour of pods

Mendel selected how many inheritable pairs of traits for his experiments? (a) 34 (b) 2 (c) 12 (d) 7

Who is called as father of genetics?

Define Genetics. What did Mendel’s contributes to the genetics?

Which trait will contrast with green colour? (a) Tall plant (b) Yellow colour (c) Round seed (d) Wrinkled seed

Mendel conducted his experiments on which plants?

Name two human traits that show variations.

What is a dominant trait?

Who rediscovered the Mendel’s laws?

Which term is used for transfer of genetic traits from one generation to next generation?