113 + Interview Questions in GENETICS IN GENERAL AWARENESS Page 2 InterviewSolution

51.	[A]: Humans and great apes have a common ancestry. [R]: Man and chimpanzee have similar band- ing pattern of chromosomes number 3 and 6.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

52.	[A]: Chromatid is one of a pair of replicated chromosomes found during the prophase and metaphase stages of mitosis and meio- sis. [R]: Chromatin is classified as euchromatin or heterochromatin on the basis of stain-ing properties. Euchromatin is thqught to be ac- tively involved in transcription and, therefore, protein synthesis, while heterochromatin is inactive.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

53.	[A]: The earliest living organisms were truc-turally simple. [R]: The earliest living organisms were more complex than present one.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 - C

Discussion

54.	[A]: Haemophillia is a genetically linked dis- ease. [R]: The carrier gene is present on X chromo- some of femaleA. 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

55.	[A]: The series of enzyme controlled reac- tions determine traits in an organism. [R]: Since the structure of specific proteins (enzymes) is controlled by the genes and fol- lows determination of traitsA. 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

56.	[A]: Translocation involves transfer of genetic material between homologous chromo- some. [R]: Translocation involves duplication of ge- netic material causing chromosomal aberra- tion during gametes formation.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

57.	[A]: Random mutations together with genetic drifts and selection pressure establish ge- netic difference and morphological and physiological variations in formerly identical populations. [R]: These differences generally accumulate and thus lead to the establishment of clines, geographical races and finally distinct sub- species.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

58.	[A]: In some organisms the end stages of the ancestral development pattern are dropped, as ·in case of neoteny. [R]: In some animals, some middle stages are dropped in the descendentsA. 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

59.	[A]: Heritable changes are also called muta- tions. [R]: Mutations are sudden change in chromo- somal DNA.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

60.	[A]: Jurassic period is considered the age of reptiles. [R]: Reptiles dominated during this Jurassic periodA. 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

61.	[A]: Dolly, a sheep is an example of cloning. [R]: Cloning in another sense is sexual re- production.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

62.	[A]: Mendelian recombinations are due to crossing over. [R]: Crossing over brings about exchange of genes through chiasma formation.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

63.	[A]: Isolation is a mechanism which prevents interbreeding among other wise potential mates. [R]: It is the key factor without which all other factors of evolution will merge into jumble of no significanceA. 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

64.	[A]: Isolation prevents inbreeding among the otherwise potential mates. [R]: It preserves variations which can lead to speciation.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

65.	Drosophila complete their life cycle in about..........weeks
Answer» Correct Answer - two

Discussion

66.	Drosophila has many types of hereditary variations that can be seen with low power microscopes.
Answer» Correct Answer - True

Discussion

67.	Two pairs (A & B) of rabbits were crossed as given below:(a) Can you tell which coat colour (black or white) is dominant? .............................(b) Is the coat colour sex-linked?…………………..
Answer» (a) Black (b) No

Discussion

68.	In Drosophila single mating could produce large number of progeny flies.
Answer» Correct Answer - True

Discussion

69.	A family consists of two parents and their five children and the pedigree chart below shows the inheritance of the trait colour blindness in them.(a) Who is colour blind in the parents – the Father or the Mother?
Answer» (a) Father (b) Two sons and three daughters (c) The child 1 (daughter) is colour blind (d) X chromosome (e) Haemophilia

69.

A family consists of two parents and their five children and the pedigree chart below shows the inheritance of the trait colour blindness in them.(a) Who is colour blind in the parents – the Father or the Mother?

Answer»

(a) Father

(b) Two sons and three daughters

(c) The child 1 (daughter) is colour blind

(d) X chromosome

(e) Haemophilia

Discussion

70.	[A]: Vestigeal organs are those parts of the body which are greatly reduced and are use- less. [R]: These are the ruminants of once fully de- veloped organs which are gradually lost as these were no longer necessaryA. 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

71.	[A]: Ear muscles of external ear in man are well developed. [R]: These muscles do not move external ear freely to detect soundA. 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

72.	Which one of the following has the smallest number of chromosomes?(a) Onion(b) Mouse(c) Monkey(d) Ascaris
Answer» The smallest number of chromosomes is- (d) Ascaris

72.

Which one of the following has the smallest number of chromosomes?(a) Onion(b) Mouse(c) Monkey(d) Ascaris

Answer»

The smallest number of chromosomes is-

(d) Ascaris

Discussion

73.	[A]: The establishment of reproductive isola- tion is an event of biological significance. [R]: Because in absence of reproductive iso- lation they can merge back into single popu- lationA. 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

74.	Mutation is a phenomenon which cells results in alteration of DNA sequence.
Answer» Correct Answer - True

Discussion

75.	Match the columns
Answer» Correct Answer - A-2, B-3, C-1

Discussion

76.	Recessive trait is seen due to............
Answer» Correct Answer - Non functional enzyme or no enzyme

Discussion

77.	Match the column
Answer» Correct Answer - 1-(E), 2-(A), 3-(B), 4-(C), 5-(D)

Discussion

78.	Match the column :-
Answer» Correct Answer - A-3, B-1, C-4, D-2

Discussion

79.	[A]: Heterosis is superiority of `F_1` hybrid over its two genetically dissimilar parents. [R]: Heterosis can be measured in terms of size, yield and growth rateA. 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

80.	State the three mendel’s laws of inheritance
Answer» Mendel's laws of inheritance are: (i) Law of Dominance: Out of a pair of contrasting characters present together, only one is able to express itself while the other remains suppressed. The one that expresses is the dominant character and the one that is unexpressed is the recessive one. (ii) Law of Segregation : The two members of a pair of factors separate during the formation of gametes. The gametes combine together by random fusion at the time of zygote formation. This law is also known as 'law of purity of gametes'. (iii) Law of Independent Assortment: When there are two pairs of contrasting characters, the distribution of the members of one pair into the gametes is independent of the distribution of the other pair.

80.

State the three mendel’s laws of inheritance

Answer»

Mendel's laws of inheritance are:

(i) Law of Dominance: Out of a pair of contrasting characters present together, only one is able to express itself while the other remains suppressed. The one that expresses is the dominant character and the one that is unexpressed is the recessive one.

(ii) Law of Segregation : The two members of a pair of factors separate during the formation of gametes. The gametes combine together by random fusion at the time of zygote formation. This law is also known as 'law of purity of gametes'.

(iii) Law of Independent Assortment: When there are two pairs of contrasting characters, the distribution of the members of one pair into the gametes is independent of the distribution of the other pair.

Discussion

81.	What is F1 generation?
Answer» The first generation produced by parental generation is called F₁ generation or first filial generation.

Discussion

82.	Grass hopper is a example of.........type of sex detamination
Answer» Correct Answer - XO

Discussion

83.	[A]: The base ratio (A+T )/(G+C) is constant in a particular organism. [R]: The ratio is, however, different in the dif- ferent DNA moleculesA. 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

84.	In which case `F_(1)` generation resembled eithes of the two parents?
Answer» Correct Answer - Dominance

Discussion

85.	Chromosomal theory of inheritance was given by
Answer» Correct Answer - Sutton & Boveri

Discussion

86.	[A]: The natural hybrids of the species are either totally absent or are very rare. [R]: Because members of separate species do not interbreed usuallyA. 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

87.	[A]: DNA is associated with proteins. [R]: DNA winds around histone proteins that form a pool and the entire structure is called a nucleosome.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

88.	[A]: Convergent evolution leads to pro_duct1on of analogous similarities among different groups of organisms. [R]: Animals of the same grou~ or closely r~- lated groups exhibit great divergences in their morphologyA. 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

89.	[A]: During evolution of Primates, various groups diverged in a particular sequence from the main line of descent. [R]: Prosimians (Tarsiers, lemurs) which di- verged first, are most distantly related to hu- mans and most closely related to original pri- mates.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

90.	when closely placed genes on the same chromosome are inherited together the phenmenon is known as :
Answer» Correct Answer - Linked gene

Discussion

91.	[A]: Polymerase chain reaction (PCR) fol- lowed by DNA probe is used during DNA fin- ger printing. [R]: A DNA finger print is inherited and, there- fore, resembles that of parentA. 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

92.	[A): DNA replicates after mitosis. [R]: In mitosis, the chromosomal number does not stay constantA. 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

93.	[A]: A non-overlapping code means that a base in a mRNA is not used for different codons. [R]: In translating mRNA molecules the codons do not overlap but are read in se- quence.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

94.	[A]: Amber codon is a termination codon. [R]: If in mRNA, a termination codon is present, the protein symthesis stops abruptly.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 - C

Discussion

95.	[A]: The genetic code is degenerate. [R]: Because the most amino acids have more than one codon.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

96.	[A]: A gene affecting the expression of an- other nonallelic gene is called epistatic gene. [R]: Epistatic gene hides the expression of an allele at a different locusA. 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

97.	[A]: Some babies have a small tail. [R]: This is just a freak of nature and has no explanationA. 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 - C

Discussion

98.	[A]: Sickle-cell anaemia is a genetically de- termined disorder affecting many new born babies. [R]: It is caused by heterozygosity for allele `Hb^c` , producing a single amino acid substitu- tion in the a-chain of the normal haemoglo- bin molecule determined by allele `Hb^A` .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 - C

Discussion

99.	[A]: Evolution is not occurring at present. [R]: Evolution is a very lengthy processA. 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

100.	Among lion, tiger and domestic cat, al the three have the same number of 38 chromosomes, yet they have different appearances. How do you account for such differences?
Answer» The characteristics of a species such as physical appearance, body functions and behavior are not only the outcome of chromosome number, but these depend on the genotype of every organism. That means the set of genes present in the organisms may vary and therefore lion, tiger and domestic cat have the same number of 38 chromosomes, their characteristics (like different appearances) are the result of the genes located on the chromosomes.

Discussion

Explore topic-wise InterviewSolutions in .

[A]: Heritable changes are also called muta- tions. [R]: Mutations are sudden change in chromo- somal DNA.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

[A]: Jurassic period is considered the age of reptiles. [R]: Reptiles dominated during this Jurassic periodA. 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

[A]: Dolly, a sheep is an example of cloning. [R]: Cloning in another sense is sexual re- production.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

Drosophila complete their life cycle in about..........weeks

Drosophila has many types of hereditary variations that can be seen with low power microscopes.

Two pairs (A &amp; B) of rabbits were crossed as given below:(a) Can you tell which coat colour (black or white) is dominant? .............................(b) Is the coat colour sex-linked?…………………..

In Drosophila single mating could produce large number of progeny flies.

A family consists of two parents and their five children and the pedigree chart below shows the inheritance of the trait colour blindness in them.(a) Who is colour blind in the parents – the Father or the Mother?

Which one of the following has the smallest number of chromosomes?(a) Onion(b) Mouse(c) Monkey(d) Ascaris

Mutation is a phenomenon which cells results in alteration of DNA sequence.

Match the columns

Recessive trait is seen due to............

Match the column

Match the column :-

State the three mendel’s laws of inheritance

What is F1 generation?

Grass hopper is a example of.........type of sex detamination

In which case `F_(1)` generation resembled eithes of the two parents?

Chromosomal theory of inheritance was given by

when closely placed genes on the same chromosome are inherited together the phenmenon is known as :

[A): DNA replicates after mitosis. [R]: In mitosis, the chromosomal number does not stay constantA. 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

[A]: The genetic code is degenerate. [R]: Because the most amino acids have more than one codon.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

[A]: Some babies have a small tail. [R]: This is just a freak of nature and has no explanationA. 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

[A]: Evolution is not occurring at present. [R]: Evolution is a very lengthy processA. 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

Among lion, tiger and domestic cat, al the three have the same number of 38 chromosomes, yet they have different appearances. How do you account for such differences?

Two pairs (A & B) of rabbits were crossed as given below:(a) Can you tell which coat colour (black or white) is dominant? .............................(b) Is the coat colour sex-linked?…………………..