Genetics MCQ: MCQ Test (50 questions)

Question 1 of 50

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

AA Nnumber of hydrogrn
BPhosphate group
CDeoxyribose suger
DThymine base

Question 2 of 50

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

AReproduction
BConjugation
CTransduction
DTransformation

Question 3 of 50

Number of chromosome in a normal human body cell is-

A43
B44
C45
D46

Question 4 of 50

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

A4
B1
C3
D2

Question 5 of 50

Genetic code is a-

ASinglet
BDoublet
CTriplet
DNone of these

Question 6 of 50

Which of the following traits is NOT a part of Mendel's seven contrasting traits in Green pea ?

AYellow and green colour of seed
BTall and dwarf height of the Pea plant
CSmooth and rough stem
DTerminal and axial flower

Question 7 of 50

Which one of following is a hereditary disease ?

ACataract
BHaemophilia
CPellagra
DOsteoporosisi

Question 8 of 50

Mendel's principles of inheritance are based on-

AVegetative reproduction
BAsexual reproduction
CSexual reproduction
DAll of the above

Question 9 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 10 of 50

Nucleotide base present in DNA and not RNA is-

ACytosin
BUracil
CThymine
DGuanine

Question 11 of 50

Coded information in nucleic acid depend upon-

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

Question 12 of 50

Mendel's second law is the law of -

Alndependent assortment
BSegregation
CDominance
DPolygenic inheritance

Question 13 of 50

Hybridoma technology is a new biotechnological approach for commercial production of-

AMonoclonal antibodies
BInterferon
CAntibiotics
DAlcohol

Question 14 of 50

Chromosomal theory of inheritance was given by-0

AMuller
BSutlon and Boveri
CMendel
DWaldeyer

Question 15 of 50

RNA contains-

AHexose
BRibose
CFructose
DGlucose

Question 16 of 50

Who got noble prize for artificial synthesis od DNA ?

AM. Calvin
BKhorana
CTatum
DKornberg

Question 17 of 50

Gene are made up of -

ADNA
BRNA
CDNA & RNA
Dprotein

Question 18 of 50

Number of autosomes in human sperm-

A20 pairs
B21 pairs
C22 pairs
D23 pairs

Question 19 of 50

Who proved that DNA is the basic genetic material ?

AGriffith
BWatson
CBoveri and sutton
DHershey and Chase

Question 20 of 50

A colour blind person cannot distinguish-

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

Question 21 of 50

Smallest part of DNA that undergoes recombination is :

AMuton
BCistron
CReplicon
DRecon

Question 22 of 50

All offspring of a parents are not similar due to

AVariation
BVariation in environment
CBoth a and b
DNone of these

Question 23 of 50

Genetics deals with-

AMendel's laws
BOrganic evolution
CDNA structure
DHeredity and variation

Question 24 of 50

DNA fingerprinting is a technique used for the detection of -

AAlzheimer's disease
BDisputed parentage
CAlDS
DYellow fever

Question 25 of 50

DNA fingerprinting is a technique used for the detection of -

AAlzheimer's disease
BDisputed parentage
CAIDS
DYellow fever

Question 26 of 50

Monohybrid ration of Mendal' s cross is -

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

Question 27 of 50

The term mutation was was introduced by-

ALamarck
BDarwin
CHugo devries
DMendal

Question 28 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

Question 29 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 30 of 50

The gene which exhibits effects is known as-

APolygene
BPseudogene
CPleiotropic
DComplementary

Question 31 of 50

Polynucleotide chain of DNA contains

AA nitrogenous base, deoxyribosesugar and Phosphate group
BA nitrogenous base, ribose sugar and phosphate group
CDeoxyribose sugar ribose sugar and phosphate group
DA nitrogenous base and phosphate group only

Question 32 of 50

Ribozymes are-

ADNA
BRNA
CProteins
DNone of these

Question 33 of 50

The Golden Rice contains B-carotene gene which comes from-

ACarrot
BDaffodil
CBeetroot
DPapaya

Question 34 of 50

For a colour blind person red colour appear as-

AYellow
BBlue
CGreen
DVoilet

Question 35 of 50

Insect resistant cotton plant have been genetically engineered by inserting a gene from a-

AVirus
BBacterium
CInsect
DPlant

Question 36 of 50

Syngamy results in formation of -

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

Question 37 of 50

The subunits of DNA are known as:

ANucleotide
BNucleosome
CNucleoside
DPolypeptide

Question 38 of 50

Nucleic acid occur in-

AViruses
BBacteria
CMammal
DAll form of life

Question 39 of 50

Heredirty characters of parent is transferred to their offspring by-

ABlood
BHarmone
CChromosomes
DNone of these

Question 40 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 41 of 50

When one gene controls two or more different characters simultaneously, the phenomena is called-

AApomixis
BPleiotropy
CPalyploidy
DPalyteny

Question 42 of 50

Mendel' s law were rediscovered by-

ACorrens
BTshermak
CDeveries
DAll of these

Question 43 of 50

Unit of heredity is -

AGene
BChromosomes
CChromatin
DNone of these

Question 44 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 45 of 50

Experimental evidence to show that the genetic code is

AGeorge Gamow
BWatson & Crick
CNirenberg and Matthaei
DNone of these

Question 46 of 50

Change in base sequence within the gene is called -

ABreeding
Bcloning
CMutation
DFusion

Question 47 of 50

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

ARoyal haemophilia
BTay-sachs disease
CCystic fibrosis
DHypertension

Question 48 of 50

Circular DNA is present in-

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

Question 49 of 50

Which one among the following is not correct about Down's Syndrome ?

AIt is a genetic disorder
BEffected individual has early ageing
CEffected person has mental retardation
DEffected person has furrowed tongue

Question 50 of 50

Sexual reproduction causes genetic variation because of-

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