Genetics MCQ: MCQ Test
50 questions · pick one option for each · submit when you finish to see your score and the correct answers.
Question 1 of 50
Mendel's second law is the law of -
- Alndependent assortment
- BSegregation
- CDominance
- DPolygenic inheritance
Question 2 of 50
Nucleosome contains-
- AOnly histones
- BBoth DNA and histones
- COnly DNA
- DBoth DNA and RNA
Question 3 of 50
The subunits of DNA are known as:
- ANucleotide
- BNucleosome
- CNucleoside
- DPolypeptide
Question 4 of 50
Who got noble prize for artificial synthesis od DNA ?
- AM. Calvin
- BKhorana
- CTatum
- DKornberg
Question 5 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 6 of 50
All offspring of a parents are not similar due to
- AVariation
- BVariation in environment
- CBoth a and b
- DNone of these
Question 7 of 50
Sex chromosome in human male are named-
- AXX
- BXO
- CXY
- DNone
Question 8 of 50
Number of autosomes in human sperm-
- A20 pairs
- B21 pairs
- C22 pairs
- D23 pairs
Question 9 of 50
Artificial gene synthesis was first done in laboratory by-
- AMillar
- BKhurana
- CD. Veries
- DKelvin
Question 10 of 50
Sexual reproduction causes genetic variation because of-
- ABlending of genes
- BChromosomal changes
- CShuffling of genes
- DAll of the above
Question 11 of 50
Unit of heredity is -
- AGene
- BChromosomes
- CChromatin
- DNone of these
Question 12 of 50
The process of copying genetic information from one strand of DNA into RNA is termed as
- ATranslation
- BTranscription
- CReplication
- DMutation
Question 13 of 50
Ribozymes are-
- ADNA
- BRNA
- CProteins
- DNone of these
Question 14 of 50
In May 2019, scientists from Council of Scientific & Industrial Research's (CSIR)-Centre for Cellular and Molecular Biology in Hyderabad, for the first time, sequenced the entire genome of_______.
- ANilgiri Tahr
- BAsiatic Lion
- CLion-tailed Macaque
- DElephant
Question 15 of 50
Chromosomes are best seen in-
- AInterphase
- BProphase
- CMetaphase
- DTelophase
Question 16 of 50
The first cloned animal Dolly was a-
- ADog
- BRabbit
- CCat
- DSheep
Question 17 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 18 of 50
Mendal worked on -
- AEdible pea
- BWild pea
- CGarden pea
- DPegion pea
Question 19 of 50
Deploid number of chromosome in man is-
- A23
- B24
- C46
- DIndefinite number
Question 20 of 50
For a colour blind person red colour appear as-
- AYellow
- BBlue
- CGreen
- DVoilet
Question 21 of 50
Which one of following is a sex linked disease ?
- ALeprosy
- BTuberculosis
- CColour blindness
- DLeukamea
Question 22 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 23 of 50
Experimental evidence to show that the genetic code is
- AGeorge Gamow
- BWatson & Crick
- CNirenberg and Matthaei
- DNone of these
Question 24 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 25 of 50
Coded information in nucleic acid depend upon-
- AArrangement of nucleotides
- BPosition of nucleotides
- CNumber of nucleotides
- DAll of above
Question 26 of 50
Change in base sequence within the gene is called -
- ABreeding
- Bcloning
- CMutation
- DFusion
Question 27 of 50
Nucleoside is-
- ANitrogenous base + Suger
- BNitrogenous base + Sugar + Phosphate
- CSugar + Phosphate
- DNitrogenous base + Phosphate
Question 28 of 50
Double helix model of DNA is given by-
- ALecuwenhoek
- BSalach
- CWatson and Crick
- DDalton
Question 29 of 50
Hybridoma technology is a new biotechnological approach for commercial production of-
- AMonoclonal antibodies
- BInterferon
- CAntibiotics
- DAlcohol
Question 30 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 31 of 50
A colour blind person cannot distinguish-
- ABlack and yellow
- BRed and green
- CYellow and white
- DGreen and blur
Question 32 of 50
Smallest part of DNA that undergoes recombination is :
- AMuton
- BCistron
- CReplicon
- DRecon
Question 33 of 50
DNA fingerprinting is a technique used for the detection of -
- AAlzheimer's disease
- BDisputed parentage
- CAlDS
- DYellow fever
Question 34 of 50
Transmission of characters from one generation to next is called-
- AEvolution
- BHeredity
- CGenetics
- DMutation
Question 35 of 50
When one gene controls two or more different characters simultaneously, the phenomena is called-
- AApomixis
- BPleiotropy
- CPalyploidy
- DPalyteny
Question 36 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 37 of 50
What combination of paternal chromosome results in a female ?
- AZX
- BXX
- CYZ
- DXY
Question 38 of 50
Genetic material found in cell is-
- ADNA
- BRNA
- CProtein
- DCarbohydrate
Question 39 of 50
Heredirty characters of parent is transferred to their offspring by-
- ABlood
- BHarmone
- CChromosomes
- DNone of these
Question 40 of 50
Queen Victoria of England was-
- AAIDS Patient
- BDeaf
- CHemophiliac
- DColour blind
Question 41 of 50
The Golden Rice contains B-carotene gene which comes from-
- ACarrot
- BDaffodil
- CBeetroot
- DPapaya
Question 42 of 50
Circular DNA is present in-
- AE.R and Ribosomes
- BRibosomes and chloroplastes
- CRibosomes and mitochondria
- DMitochondria and chloroplasts
Question 43 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 44 of 50
Syngamy results in formation of -
- AHaploid zygote
- BDiploid zygote
- CNon-motile male gametes
- DMotile male gametes
Question 45 of 50
Nucleotide base present in DNA and not RNA is-
- ACytosin
- BUracil
- CThymine
- DGuanine
Question 46 of 50
Which one is exception to Mendel's principle of dominance ?
- AWild pea
- BMirablius
- CGarden pea
- DMaize
Question 47 of 50
DNA fingerprinting is a technique used for the detection of -
- AAlzheimer's disease
- BDisputed parentage
- CAIDS
- DYellow fever
Question 48 of 50
Which one of the following genetic disease is sex-linked ?
- ARoyal haemophilia
- BTay-sachs disease
- CCystic fibrosis
- DHypertension
Question 49 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 50 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