Genetics MCQ: MCQ Test (50 questions)

Question 1 of 50

A colour blind person cannot distinguish-

ABlack and yellow
BRed and green
CYellow and white
DGreen and blur

Question 2 of 50

Genes located on mitochondrial DNA-

AGenerally show maternal inheritance
BAre always inherited from male parent
CShow hipa rental inheritance
DAre not inherited like the nuclear gene

Question 3 of 50

Circular DNA is present in-

AE.R and Ribosomes
BRibosomes and chloroplastes
CRibosomes and mitochondria
DMitochondria and chloroplasts

Question 4 of 50

Mendal worked on -

AEdible pea
BWild pea
CGarden pea
DPegion pea

Question 5 of 50

The subunits of DNA are known as:

ANucleotide
BNucleosome
CNucleoside
DPolypeptide

Question 6 of 50

Coded information in nucleic acid depend upon-

AArrangement of nucleotides
BPosition of nucleotides
CNumber of nucleotides
DAll of above

Question 7 of 50

Ribozymes are-

ADNA
BRNA
CProteins
DNone of these

Question 8 of 50

A genetically engineered form of brinjal Known as the BT-brinjal has been developed The objective of this is

ATo make it pest resistant
BTo improve its taste and nutritive value
CTo make it drought resistant
DTo make its….longer

Question 9 of 50

Process in which part of a DNA bacterial cell is transferred to another through virus is-

AReproduction
BConjugation
CTransduction
DTransformation

Question 10 of 50

Syngamy results in formation of -

AHaploid zygote
BDiploid zygote
CNon-motile male gametes
DMotile male gametes

Question 11 of 50

Nucleosome contains-

AOnly histones
BBoth DNA and histones
COnly DNA
DBoth DNA and RNA

Question 12 of 50

Differentiation of organs and tissues in a developing organism is associated with-

ADifferential expression of genes
BDevelopment mutations
CDelation of genes
DLethal mutation

Question 13 of 50

Mendel's second law is the law of -

Alndependent assortment
BSegregation
CDominance
DPolygenic inheritance

Question 14 of 50

One gene enzyme theory is given by -

AWatson and Crick
BHargovind Khurana
CBeadle and Tatum
DMorgan

Question 15 of 50

The number of hydrogen bonds between guanine and cytosine in DNA is-

A4
B1
C3
D2

Question 16 of 50

Colour-blindness is related with a defect in-

ARod cells
BCone cells
CEye muscles
DAll of these

Question 17 of 50

When one gene pair hides the effect of the other unit, the phenomenon is referred to as-

ANone of the options
BEpistasis
CDominance
DMutation

Question 18 of 50

The hydropillic nature of DNA is due to the presence of :

AA Nnumber of hydrogrn
BPhosphate group
CDeoxyribose suger
DThymine base

Question 19 of 50

A colour blind person marry with a normal women. Blindness is produced in their-

ASon
BDaughter
CSon of their son
DDaughter of their daughter

Question 20 of 50

DNA fingerprinting is a technique used for the detection of -

AAlzheimer's disease
BDisputed parentage
CAlDS
DYellow fever

Question 21 of 50

Mendel's principles of inheritance are based on-

AVegetative reproduction
BAsexual reproduction
CSexual reproduction
DAll of the above

Question 22 of 50

Gene are made up of -

ADNA
BRNA
CDNA & RNA
Dprotein

Question 23 of 50

Nucleoside is-

ANitrogenous base + Suger
BNitrogenous base + Sugar + Phosphate
CSugar + Phosphate
DNitrogenous base + Phosphate

Question 24 of 50

Deploid number of chromosome in man is-

A23
B24
C46
DIndefinite number

Question 25 of 50

Who is responsible for the sex determination of a child-

AFather
BMother
CBoth mother and father
DNone of these

Question 26 of 50

Haemophilia is due to-

ADominant autosomal genes
BRecessive autosomal genes
CRecessive sex linked genes
DDominant sex linked gene

Question 27 of 50

Genetics deals with-

AMendel's laws
BOrganic evolution
CDNA structure
DHeredity and variation

Question 28 of 50

Haemophilia is a genetic disorder which lead to-

ADecrease in haemoglobine level
BRheumatic heart disease
CDecrease in WBC
DNon-clotting of blood

Question 29 of 50

Which one of following is a sex linked disease ?

ALeprosy
BTuberculosis
CColour blindness
DLeukamea

Question 30 of 50

Queen Victoria of England was-

AAIDS Patient
BDeaf
CHemophiliac
DColour blind

Question 31 of 50

Daughter born to hemophiliac father and normal mother could be-

ANormal
BCarrier
CHemophiliac
DAll of these

Question 32 of 50

Reverse transcription was discovered by-

AWatson and Crick
BHargovind Khurana
CLemin & Baltimore
DBeadle & Tatum

Question 33 of 50

Which one is exception to Mendel's principle of dominance ?

AWild pea
BMirablius
CGarden pea
DMaize

Question 34 of 50

Who got noble prize for artificial synthesis od DNA ?

AM. Calvin
BKhorana
CTatum
DKornberg

Question 35 of 50

Double helix model of DNA is given by-

ALecuwenhoek
BSalach
CWatson and Crick
DDalton

Question 36 of 50

The process of transfer of genetic information from DNA to RNA or formation of RNA from DNA is-

ATransversion
BTranscription
CTranslation
DTranslocation

Question 37 of 50

Sexual reproduction causes genetic variation because of-

ABlending of genes
BChromosomal changes
CShuffling of genes
DAll of the above

Question 38 of 50

Nucleotide base present in DNA and not RNA is-

ACytosin
BUracil
CThymine
DGuanine

Question 39 of 50

In genetic dictionary there are 64 codons as-

A64 amino acids are to be coded
B64 types of t RNA are present
CThere 44 nonsense codons and 20 sense codons
DGenetic code is triplet

Question 40 of 50

DNA strand have-

AQuaternary structure
BSame polarity
CAntiparallel
DDisulphide bond

Question 41 of 50

Word gene was given by -

AMorgan
BMendal
CJohansen
DD Bridge

Question 42 of 50

Synthesis of DNA is called-

AReplication
BTranscription
CTermination
DAmination

Question 43 of 50

Which one of the following genetic disease is sex-linked ?

ARoyal haemophilia
BTay-sachs disease
CCystic fibrosis
DHypertension

Question 44 of 50

Mendel' s law were rediscovered by-

ACorrens
BTshermak
CDeveries
DAll of these

Question 45 of 50

Who is the father of Genetics ?

ADarwin
BMendel
CBridge
DWiseman

Question 46 of 50

Monohybrid ration of Mendal' s cross is -

A9 : 3:3:1
B0.12569444444444
C0.042361111111111
D0.084027777777778

Question 47 of 50

The gene which exhibits effects is known as-

APolygene
BPseudogene
CPleiotropic
DComplementary

Question 48 of 50

The term mutation was was introduced by-

ALamarck
BDarwin
CHugo devries
DMendal

Question 49 of 50

Gene is :

AParticular DNA segment which determines heredity of a particular trait
BHalf DNA segment of somatic cells
CWhole DNA
DHalf DNA segment

Question 50 of 50

Which one of the following statements is correct ?nCretinism is human disorder which is due to the under secretion of-

AAdrenalin hormone
BCortisone hormone
CGlucagon hormone
DThyroxin hormone