687 + Interview Questions in PRINCIPLES-OF-INHERITANCE-AND-VARIATION IN GENERAL AWARENESS Page 14 InterviewSolution

651.	Walter sutton is famous for his contribution to :A. Genetic engineeringB. TotipotencyC. Quantitative geneticsD. Chromosomal theory of inheritance
Answer» Correct Answer - D

Discussion

652.	Assertion : Restriction endonuclease recognize short palindromic. Sequence and cut at specific sites. Reason : When a restriction endonuclease acts on Palindrome, it cleaves both the the strands of DNA molecules.A. If both the assertion and the reason are true and the reasons is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not a correct explanation of the assertionC. If the assertion is true but the reson is falseD. If both the assertion and reason are false
Answer» Correct Answer - B B

Discussion

653.	A normal visioned man whose father was colour blind, marries a woman whose father was also colour blind .They have their first child as a daughter .What are the chances that this child would be colour blind ?A. 1B. zero per centC. 0.25D. 0.5
Answer» Correct Answer - B

Discussion

654.	A normal visioned man whose father was colour blind, marries a woman whose father was also colour blind .They have their first child as a daughter .What are the chances that this child would be colour blind ?A. `25%`B. `50%`C. `100%`D. Zero precent
Answer» Correct Answer - D

Discussion

655.	When two genetic loci produce identical phenotypes in cis as well as in trans position ,they are considered to beA. Multiple allelesB. The parts of same geneC. PseudoallelesD. Different genes
Answer» Correct Answer - C

Discussion

656.	When two genetic loci produce identical phenotypes in cis as well as in trans position ,they are considered to beA. pseudoallelesB. different genesC. multiple allelesD. parts of same gene
Answer» Correct Answer - A Pseudoalleles are closely placed genes producing related phenotypic effect which is distinguishable only through a rare crossing over, e.g. dominant star and recessive asteroid eye traits in Drosophila.

Discussion

657.	When two genetic loci produce identical phenotypes in cis as well as in trans position ,they aare considered to beA. Pseudo allelsB. The parts of the same ganeC. Multiple allelsD. Differentgenes
Answer» Correct Answer - B

Discussion

658.	Which is the most common mechanism of genetic varisation in the poplulation of a sexually-reproducing organismA. Chromosomal aberrrationB. Genetic driftC. RecombinationD. Transduction
Answer» Correct Answer - C Chromosomal aberrations, gentic dirft and recombination all play role in brining genetic variation but recombination is more common.

Discussion

659.	The functinal unit of mutation isA. GeneB. MutonC. ReconD. Cistron
Answer» Correct Answer - B

Discussion

660.	Assertion : Hybrids are generally back crossed. Back cross is done to increases the trains of the parnnts.A. If both the assertion and the reason are true and the reasons is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not a correct explanation of the assertionC. If the assertion is true but the reson is falseD. If both the assertion and reason are false
Answer» Correct Answer - A Back cross is a cross which is performed between hybrid and one of its parent . In plant breeding back cross is performed a few times in order to increase the traits of that parent. For example a crop plant is crossed with a wild variety in order to obtain its disease resistance. In the process most good traits or the crop plant get diluted. the hybrid is , therefore repeatedly crossed with parent crop plant in order to transfer the good traits back into it.

Discussion

661.	Assertion : The genetic complement of an organism is called genotype Reason : Genotype is the type of hereditary propeties of an organism.A. If both the assertion and the reason are true and the reasons is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not a correct explanation of the assertionC. If the assertion is true but the reson is falseD. If both the assertion and reason are false
Answer» Correct Answer - A Genotype is the hereditary properties of an organism and genetic complement of organism is called genotype.

Discussion

662.	Mark the incorrect pair (w.r.t sex determination)A. ZW-ZZ type - FisjesB. ZO-ZZ type - BirdsC. XX-XO type - DioscoreaD. XX-XY type - Melandrium
Answer» Correct Answer - B

Discussion

663.	Holandric genes are present onA. X-chromosomesB. Y-chromosomesC. Sex-chromosomes as well as autosomesD. Autosomes
Answer» Correct Answer - B

Discussion

664.	Assertion : Holandric genes are found on Y chromoseme . Reason : Inheritance of Holdandric genes are always from father to son.A. If both the assertion and the reason are true and the reasons is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not a correct explanation of the assertionC. If the assertion is true but the reson is falseD. If both the assertion and reason are false
Answer» Correct Answer - b Holandric genes are always found on Y chromosomes of male. Hence their inheritance is always from father to son.

Discussion

665.	A : Holandric traits are passed from one generation to the next generation. R : These traits appear more frequently in one sex than in other.A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)B. If both Assertion & Reason are true and the reason is not the correct explanation of the assertion , then mark (2)C. If Assertion is true statement but Reason is false, then mark (3)D. If both Assertion and Reason are false statements, then mark (4)
Answer» Correct Answer - C

Discussion

666.	Heterozygous `("Hb"^(A) "Hb"^(S))` individuals have how much per cent of probability of transmission of the mutant gene to progeny?A. `25%`B. `50%`C. `75%`D. `100%`
Answer» Correct Answer - B Heterozygous `(Hb^(A) Hb^(S))` individuals have 50% per cent of probability of transmission of the mutant gene to progeny.

Discussion

667.	Genomic mutation isA. Change in number genesB. Change in number of chromosomesC. Change in shape of chromosomesD. All of these
Answer» Correct Answer - B

Discussion

668.	Haploids are more suitable for mutation studies than the diploids. This is becauseA. All mutations, whether dominant or recessive are expressed in haploidB. Haploids are reproductively more stable than diploidsC. Mutagens penetrate in haploids more effetively than diploidsD. Haploids are more abundant in nature than diploids
Answer» Correct Answer - A

Discussion

669.	Haploids are more suitable for mutation studies than the diploids. This is becauseA. Haploids are more abundant in nature than diploidsB. All mutations, whether dominant or recessive are expressed in haploidsC. Haploids are reproductively more stable than diploidsD. Mutagens penetrate in haploids more effectively than is diploids
Answer» Correct Answer - B

Discussion

670.	Assertion : Haploids are used to study mutation. Reason : Most of the mutations are recessive.A. If both the assertion and the reason are true and the reasons is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not a correct explanation of the assertionC. If the assertion is true but the reson is falseD. If both the assertion and reason are false
Answer» Correct Answer - A Mutations may be either recessive or dominant. In haploid organisms like viruses and bacteria both recessive and dominant mutations can be recognized by their effects on the phenotype of the organisms in which they originated. Therefore in several crops desirable mutants haven been isolated among haploids derived in culture.

Discussion

671.	The human male never passes on the gene for haemophilia to this son. Why ?
Answer» Male sex is determined by Y- chromosome which does not bear gene for haemophilia

Discussion

672.	Assertion : Haemophilia never occurs in women. Reason : Gene for hemophilia is located on X chromoseome.A. If both the assertion and the reason are true and the reasons is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not a correct explanation of the assertionC. If the assertion is true but the reson is falseD. If both the assertion and reason are false
Answer» Correct Answer - a Haemophilia never occurs in women because it is a recessive gene disease if both the sex chromosome `X^(th),X^(h),` it will be lethal i.e. such female die before birth. Its gene is never found on chromosome Y.

Discussion

673.	Chromosomes can be stained withA. IodineB. Aniline blueC. SafraninD. Aceto carmine
Answer» Correct Answer - D (d) Carmine is a dye extracted from the cochineal insect (coccuscacti).

Discussion

674.	Drosophila melanogaster is found to be very suitable for genetic studies because (i) They could be grown in simple synthetic medium in the laboratory (ii) They complete their life-cycle in about 14 days (iii) A single mating could produce a large number of progents (iv) Male and females are clearly distinguishable (v) It has few hereditary variations that can be seen with high power microscopes Select how many are correct statements.A. 5B. 4C. 2D. 3
Answer» Correct Answer - B Drosophila melanogaster find very suitable for genetic studies because (ii) They could be grown in simple synethetic medium in the laboratory. They complete their life-cycle in about 14 days. A single mating could produce a large number of progenies. Male and females are clearly distinguishable. It has many hereditary variations that can be seen with low power microscopes.

Discussion

675.	Read the following statements. (i) Morgan carried out several monohybrid crosses in Drosophila to study genes that were sex-linked. (ii) Morgan attributed that proportion of parental gene combination is less than the non-parental type due to the physical association. Term recombination was coined by Morgon to describe the generation of non-parental gene combinations. Alfred Strutevent used the frequency of linkage between gene pairs on the same chromosome and fine genetic map. Select how many are incorrect statement(s).A. 3B. 1C. 4D. 2
Answer» Correct Answer - A Morgan carried out several dihybrid crosses in Drosophila to study genes that were sex-linked. Morgan attributed that proportion of parental gene combination is more than the non-parental type due to the physical association. Alfred Sturtevant used the frequency of recombination between gene pairs on the same chromosome and find genetic map.

Discussion

676.	When Mendel self hybridised the `F_(1)` plants `(RrYy)` he found that dominant and recessive traits of one character are segregated in aA. `9:1` ratioB. `3:3` ratioC. `10:6` ratioD. `3:1` ratio
Answer» Correct Answer - D

Discussion

677.	A molecule that can act as a genetic material must fulfill the traits given below, exceptA. it should be able to express itself in the from of Mendelian charactersB. it should be able to generate its replicaC. is should unstable structurally and chemicallyD. it should provided the scope for new changes that are required for evolution
Answer» Correct Answer - C

Discussion

678.	State True or False (i) In birds, both the sexes possess two sex chromosomes. (ii) In butterflies sex determination is exactly opposite the condition found in grassnoppers .
Answer» (i) True (ii) True

Discussion

679.	Fill in the blanks (i) In chicks `"________"` individual produces two different type of gametes. (ii) In butterflies all `"______"` gametes contain autosomes as well as sex chromosome.
Answer» (i) Female (ii) Male

Discussion

680.	State True or False (i) Chromosomal aberrations are commonly observed in cancer cells (ii) Mutation is the only phenomenon that leads to variation in DNA.
Answer» (i) True (ii) False

Discussion

681.	Given below is the representation of kind of chromosomal mutation what is the kind of mutation represented ? A. DeletionB. DuplicationC. InversionD. Reciprocal translocation
Answer» Correct Answer - C In inversion a piece of chromosomes is removed and rejoined in reverse order.

Discussion

682.	Recessive characteres are expressdA. Only when they are presenty on X chromsomes of maleB. Only when they are prensent of X chromosomes of femaleC. On any autosomeD. On both the chromosomes of femal
Answer» Correct Answer - A (a) Recessive characters are expressed in the subsequent genertion olny when present on the X -chromosame of male.

Discussion

683.	Give one word for the following : (i) Phenomenon which results in alternation of DNA sequences of consequently results in changes in the genotype and the phenotype of an organism. (ii) Type of mutation that arise due to change in a single base pair of DNA.
Answer» (i) Mutation (ii) Point mutation

Discussion

684.	Find out the incorrect match. (1) A- Homogametic. , (2) B-Female chick. (3) A-sex determiner , (4) B-Heterogametic
Answer» (3) (B) is sex determine as it has heteromorphic sex chromosomes.

Discussion

685.	Female rarely experience the physiologic defect of haemophilia because they do so only when they areA. Heterozygous for the defectB. Homozygous for the defectC. Carrier for the defectD. Wives of haemophilic husbands
Answer» Correct Answer - B

Discussion

686.	Which of the following condition is releated to haemophiliaA. A recesive gene responsible present in the X chromosomeB. A dominant gene responsible present in the X chromosomeC. A responsible dominate gene responsible present in the Y chromosomeD. A respobsible dominant gene present in the autosomal chromosome
Answer» Correct Answer - A

Discussion

687.	The plant in which Hugo de Vries introduced the concept of multationA. Oenothera lamarkianaB. Pisum sativumC. Allium cepaD. Mirabilis jalapa
Answer» Correct Answer - A

Discussion

Explore topic-wise InterviewSolutions in .

Walter sutton is famous for his contribution to :A. Genetic engineeringB. TotipotencyC. Quantitative geneticsD. Chromosomal theory of inheritance

A normal visioned man whose father was colour blind, marries a woman whose father was also colour blind .They have their first child as a daughter .What are the chances that this child would be colour blind ?A. 1B. zero per centC. 0.25D. 0.5

A normal visioned man whose father was colour blind, marries a woman whose father was also colour blind .They have their first child as a daughter .What are the chances that this child would be colour blind ?A. `25%`B. `50%`C. `100%`D. Zero precent

When two genetic loci produce identical phenotypes in cis as well as in trans position ,they are considered to beA. Multiple allelesB. The parts of same geneC. PseudoallelesD. Different genes

When two genetic loci produce identical phenotypes in cis as well as in trans position ,they are considered to beA. pseudoallelesB. different genesC. multiple allelesD. parts of same gene

When two genetic loci produce identical phenotypes in cis as well as in trans position ,they aare considered to beA. Pseudo allelsB. The parts of the same ganeC. Multiple allelsD. Differentgenes

Which is the most common mechanism of genetic varisation in the poplulation of a sexually-reproducing organismA. Chromosomal aberrrationB. Genetic driftC. RecombinationD. Transduction

The functinal unit of mutation isA. GeneB. MutonC. ReconD. Cistron

Mark the incorrect pair (w.r.t sex determination)A. ZW-ZZ type - FisjesB. ZO-ZZ type - BirdsC. XX-XO type - DioscoreaD. XX-XY type - Melandrium

Holandric genes are present onA. X-chromosomesB. Y-chromosomesC. Sex-chromosomes as well as autosomesD. Autosomes

Heterozygous `("Hb"^(A) "Hb"^(S))` individuals have how much per cent of probability of transmission of the mutant gene to progeny?A. `25%`B. `50%`C. `75%`D. `100%`

Genomic mutation isA. Change in number genesB. Change in number of chromosomesC. Change in shape of chromosomesD. All of these

The human male never passes on the gene for haemophilia to this son. Why ?

Chromosomes can be stained withA. IodineB. Aniline blueC. SafraninD. Aceto carmine

When Mendel self hybridised the `F_(1)` plants `(RrYy)` he found that dominant and recessive traits of one character are segregated in aA. `9:1` ratioB. `3:3` ratioC. `10:6` ratioD. `3:1` ratio

State True or False (i) In birds, both the sexes possess two sex chromosomes. (ii) In butterflies sex determination is exactly opposite the condition found in grassnoppers .

Fill in the blanks (i) In chicks `"__"` individual produces two different type of gametes. (ii) In butterflies all `""` gametes contain autosomes as well as sex chromosome.

State True or False (i) Chromosomal aberrations are commonly observed in cancer cells (ii) Mutation is the only phenomenon that leads to variation in DNA.

Given below is the representation of kind of chromosomal mutation what is the kind of mutation represented ? A. DeletionB. DuplicationC. InversionD. Reciprocal translocation

Recessive characteres are expressdA. Only when they are presenty on X chromsomes of maleB. Only when they are prensent of X chromosomes of femaleC. On any autosomeD. On both the chromosomes of femal

Give one word for the following : (i) Phenomenon which results in alternation of DNA sequences of consequently results in changes in the genotype and the phenotype of an organism. (ii) Type of mutation that arise due to change in a single base pair of DNA.

Find out the incorrect match. (1) A- Homogametic. , (2) B-Female chick. (3) A-sex determiner , (4) B-Heterogametic

Female rarely experience the physiologic defect of haemophilia because they do so only when they areA. Heterozygous for the defectB. Homozygous for the defectC. Carrier for the defectD. Wives of haemophilic husbands

The plant in which Hugo de Vries introduced the concept of multationA. Oenothera lamarkianaB. Pisum sativumC. Allium cepaD. Mirabilis jalapa

Explore topic-wise InterviewSolutions in .

Walter sutton is famous for his contribution to :A. Genetic engineeringB. TotipotencyC. Quantitative geneticsD. Chromosomal theory of inheritance

A normal visioned man whose father was colour blind, marries a woman whose father was also colour blind .They have their first child as a daughter .What are the chances that this child would be colour blind ?A. 1B. zero per centC. 0.25D. 0.5

A normal visioned man whose father was colour blind, marries a woman whose father was also colour blind .They have their first child as a daughter .What are the chances that this child would be colour blind ?A. `25%`B. `50%`C. `100%`D. Zero precent

When two genetic loci produce identical phenotypes in cis as well as in trans position ,they are considered to beA. Multiple allelesB. The parts of same geneC. PseudoallelesD. Different genes

When two genetic loci produce identical phenotypes in cis as well as in trans position ,they are considered to beA. pseudoallelesB. different genesC. multiple allelesD. parts of same gene

When two genetic loci produce identical phenotypes in cis as well as in trans position ,they aare considered to beA. Pseudo allelsB. The parts of the same ganeC. Multiple allelsD. Differentgenes

Which is the most common mechanism of genetic varisation in the poplulation of a sexually-reproducing organismA. Chromosomal aberrrationB. Genetic driftC. RecombinationD. Transduction

The functinal unit of mutation isA. GeneB. MutonC. ReconD. Cistron

Mark the incorrect pair (w.r.t sex determination)A. ZW-ZZ type - FisjesB. ZO-ZZ type - BirdsC. XX-XO type - DioscoreaD. XX-XY type - Melandrium

Holandric genes are present onA. X-chromosomesB. Y-chromosomesC. Sex-chromosomes as well as autosomesD. Autosomes

Heterozygous `("Hb"^(A) "Hb"^(S))` individuals have how much per cent of probability of transmission of the mutant gene to progeny?A. `25%`B. `50%`C. `75%`D. `100%`

Genomic mutation isA. Change in number genesB. Change in number of chromosomesC. Change in shape of chromosomesD. All of these

The human male never passes on the gene for haemophilia to this son. Why ?

Chromosomes can be stained withA. IodineB. Aniline blueC. SafraninD. Aceto carmine

When Mendel self hybridised the `F_(1)` plants `(RrYy)` he found that dominant and recessive traits of one character are segregated in aA. `9:1` ratioB. `3:3` ratioC. `10:6` ratioD. `3:1` ratio

State True or False (i) In birds, both the sexes possess two sex chromosomes. (ii) In butterflies sex determination is exactly opposite the condition found in grassnoppers .

Fill in the blanks (i) In chicks `"________"` individual produces two different type of gametes. (ii) In butterflies all `"______"` gametes contain autosomes as well as sex chromosome.

State True or False (i) Chromosomal aberrations are commonly observed in cancer cells (ii) Mutation is the only phenomenon that leads to variation in DNA.

Given below is the representation of kind of chromosomal mutation what is the kind of mutation represented ? A. DeletionB. DuplicationC. InversionD. Reciprocal translocation

Recessive characteres are expressdA. Only when they are presenty on X chromsomes of maleB. Only when they are prensent of X chromosomes of femaleC. On any autosomeD. On both the chromosomes of femal

Give one word for the following : (i) Phenomenon which results in alternation of DNA sequences of consequently results in changes in the genotype and the phenotype of an organism. (ii) Type of mutation that arise due to change in a single base pair of DNA.

Find out the incorrect match. (1) A- Homogametic. , (2) B-Female chick. (3) A-sex determiner , (4) B-Heterogametic

Female rarely experience the physiologic defect of haemophilia because they do so only when they areA. Heterozygous for the defectB. Homozygous for the defectC. Carrier for the defectD. Wives of haemophilic husbands

The plant in which Hugo de Vries introduced the concept of multationA. Oenothera lamarkianaB. Pisum sativumC. Allium cepaD. Mirabilis jalapa

Fill in the blanks (i) In chicks `"__"` individual produces two different type of gametes. (ii) In butterflies all `""` gametes contain autosomes as well as sex chromosome.