Que- Human cell contains ______ different kinds of tRNA molecules
a. 25.0
b. 35.0
c. 45.0
d. 15.0
Answer- 45.0
Que- In eukaryotes newly synthesized mRNA
a. Travels a large distance from nucleus to cytoplasm
b. Is directly released into the cytoplasm
c. Contains a cap and tail
d. Both a and c
Answer- Both a and c
Que- Which 3 codons are nonsense codons?
a. UAA,UAU,UUA
b. UGA,UAG,UAA
c. UGG,UGA,UAU
d. UGG,UAA,UAG
Answer- UGA,UAG,UAA
Que- Methionine is specified by
a. Stop codon
b. AUG
c. Start codon
d. Both b and c
Answer- Both b and c
Que- In mitochondria UGA is/specifies as
a. Stop codon
b. Tryptophan
c. Initiation codon
d. Methionine
Answer- Tryptophan
Que- Three nucleotide sequence on tRNA that specifies an amino acis is
a. Codon
b. Anticodon
c. Nonsense codon
d. Genetic code
Answer- Anticodon
Que- Initiation complex in translation is composed of
a. Ribosome and aminoacyl-tRNA
b. Ribosome and tRNA
c. tRNA and aminoacyl-tRNA
d. None of these
Answer- Ribosome and aminoacyl-tRNA
Que- Examples of chromosomal aberrations are
a. Sickle cell anemia
b. Phenylketonuria
c. Down's syndrome
d. Both a and b
Answer- Both a and b
Que- Point mutations are represented as
a. Presence of an extra chromosome
b. Loss of chromosome
c. Alteration in sequence of DNA nucleotide
d. Insertions and inversion of genes
Answer- Alteration in sequence of DNA nucleotide
Que- Strand of DNA which is not transcribed is called
a. Antisense
b. Template
c. Coding
d. None of these
Answer- Coding
Que- Phenylketonuria is due to deficiency of
a. Phenylalnine
b. Phenylalanine hydroxylase
c. Phenylene
d. All of these
Answer- Phenylalanine hydroxylase
Que- Molecular basis of sickle cell anaemia was found by
a. F. Sanger
b. Beadle and Tatum
c. Vernone Ingram
d. Mendal
Answer- Vernone Ingram
Que- Which is incorrect about nucleosome
a. 2 turns of DNA coiled round histones
b. 8 histones as acidic proteins
c. 200 nucleotides in one nucleosome
d. None of these
Answer- 8 histones as acidic proteins
Que- Sex chromosomes were 1" discovered in
a. Man
b. Pea plant
c. Fruitfly
d. None of these
Answer- Fruitfly
Que- A sugarcane cell has _________ chromosomes.
a. 20.0
b. 32.0
c. 40.0
d. 80.0
Answer- 80.0
Que- Centromere represents
a. Primary constriction
b. Secondary constriction
c. Tertiary constriction
d. Quaternary constriction
Answer- Primary constriction
Que- Wich of the following cal kill mice if injected separately?
a. Live R type pneumococcus
b. Heat killed R type pneumococcus
c. Live S type pneumococcus
d. Heat killed S type pneumococcus
Answer- Live S type pneumococcus
Que- X-Ray diffraction pattern of DNA was prepared by
a. Rosalind Franklin
b. Maurice Wilkins
c. Watson
d. Crick
Answer- Rosalind Franklin
Que- In sickle cell Hb, which chain is affected?
a. Alpha chain
b. Beta Chain
c. Both of these
d. None of these
Answer- Beta Chain
Que- In which of the following cases, genotypic and phenotypic ratio will remain same in F2 generation
a. Law of independent assortment
b. Law of Segregation
c. Test cross
d. Incomplete dominance.
Answer- Incomplete dominance.
Que- How many pairs of homologous chromosomes are present in Pisum sativum
a. Five pairs
b. Six pairs
c. Seven pairs
d. Eight pairs.
Answer- Seven pairs
Que- Which of the following characters of pea plant is dominant?
a. Axial flowers
b. Yellow pods
c. White flowers
d. Wrinkled seeds
Answer- Axial flowers
Que- A pea plant with yellow seed was crossed to a plant having green seeds. What will happen in F1; if plants are true breeding
a. All seeds will be yellow
b. Half of seeds will be yellow
c. All the seeds will be green
d. Both will be present in ratio of 1:2:1
Answer- All seeds will be yellow
Que- The position of a gene on chromosome is called
a. Habitat
b. Position
c. Locus
d. Location
Answer- Locus
Que- Filial is a Latin word. It means
a. Spring
b. Issue
c. Progeny
d. Descendent
Answer- Progeny
Que- Which of the following condition is hybrid
a. TT
b. Tt
c. tt
d. All of these
Answer- Tt
Que- Which of the following is monohybrid cross
a. TT x tt
b. TTYy x Ttyy
c. Both of these
d. None of these
Answer- TT x tt
Que- A pure breeding tall plant was crossed to dwarf plant. What would be probability of "Tt" genotype in F2
a. 0.25
b. 0.5
c. 0.75
d. 0.0
Answer- 0.5
Que- If a heterozygous individual shows the complete effect of both alleles, the type of inheritance would be
a. Complete dominance
b. Non dominance
c. Incomplete dominance
d. Co-Dominance
Answer- Co-Dominance
Que- The gene which controls ABO group has how many alleles in an individual
a. One
b. Two
c. Three
d. Four.
Answer- Three
Que- How many genes control Rh blood group system?
a. One
b. Two
c. Three
d. Four
Answer- Three
Que- A man with blood group "A" marries a woman of blood group "B". Both are heterozygous. What is the off-springs having phenotype "O"
a. Zero
b. 0.25
c. 0.5
d. 0.75
Answer- 0.25
Que- The trait "Kernel colour in corn" in controlled by how many pairs of genes
a. One pair
b. Two pairs
c. Three pairs
d. Many pairs.
Answer- Three pairs
Que- Baldness is most frequent in
a. Men
b. Women
c. Children
d. Girls.
Answer- Men
Que- In nature, Garden pea is
a. Self-fertilized
b. Cross fertilized
c. Cross pollinated
d. None of these
Answer- Self-fertilized
Que- The genes which do not follow law of independent assortment
a. Crossed genes
b. Linked genes
c. Recessive genes
d. Dominant genes
Answer- Linked genes
Que- Phenotype represents
a. Morphology
b. Physiology
c. Genetics
d. None of these
Answer- Morphology
Que- During test cross, if all offsprings are phenotypically dominant then parents are
a. Homozygous
b. Heterozygous
c. One homozygous other heterozygous
d. None of these
Answer- Homozygous
Que- True breeding variety is produced by
a. Self fertilization
b. Cross fertilization
c. Both of these
d. None of these
Answer- Self fertilization
Que- Genotype ratio of Mendel's law of independent assortment is
a. 3:(a)
b. 0.04306712962962963
c. 9:3:3:(a)
d. None of these
Answer- None of these
Que- Which of the following is universal donor?
a. A
b. B
c. AB
d. O
Answer- O
Que- Such inheritance in which traits vary quantitatively is
a. Continuously varying trait
b. Incomplete dominance
c. Test cross
d. Polygenic inheritance
Answer- Polygenic inheritance
Que- Inheritance in man is traced by
a. Mathematical method
b. Genetic method
c. Statistical method
d. Pedigree method
Answer- Pedigree method
Que- Skin colour in man is controlled by
a. 1 pair
b. 2 pairs
c. 4 pairs
d. 8 pairs
Answer- 4 pairs
Que- Feature correct to O-negative blood group
a. A,B antigen present
b. Anti-A, Anti-B antibody present
c. Rh antigen present
d. Rh antibody present
Answer- Anti-A, Anti-B antibody present
Que- Which of the following blood group is always heterozygous?
a. A
b. B
c. AB
d. O
Answer- AB
Que- Interaction between genes occupying different loci is
a. Dominance
b. Epistasis
c. Pleiotropy
d. None of these
Answer- Epistasis
Que- Genes that affect growth rate in humans influencing both weight and height are
a. Codominant
b. Epistasis
c. Pleiotropy
d. Polygene
Answer- Pleiotropy
Que- All of the following are continuously varying traits except
a. Kernel colour in wheat
b. Skin colour in humans
c. Height in humans
d. Tongue rolling in humans
Answer- Tongue rolling in humans
Que- The number of linkage groups in humans is
a. 12.0
b. 23.0
c. 46.0
d. 92.0
Answer- 23.0
Que- Recombination frequency between two linked genes can be calculated by
a. Back cross
b. Test cross
c. Normal cross
d. None of these
Answer- Back cross
Que- Which of the following is male determining gene in humans?
a. tfm
b. SRY
c. Both of these
d. None of these
Answer- SRY
Que- It was discovered by J.Seiler in 1914 in moth.
a. XO-XX
b. XY-XX
c. ZZ-ZW
d. None of these
Answer- ZZ-ZW
Que- Haemophilia B is due to abnormality of factor
a. VIII
b. IX
c. X
d. XI
Answer- IX
Que- Gene for blue opsin is present on chromosome.
a. X
b. Y
c. 7.0
d. 11.0
Answer- 7.0
Que- Most common type of Diabetes mellitus is
a. Type I
b. Type II
c. MODY
d. None of these
Answer- Type II
Que- Recombinant DNA contains DNA from
a. 2 different sources
b. 3 different sources
c. 2 same sources
d. 3 same sources
Answer- 2 different sources
Que- First restriction enzyme was isolated by
a. Kary Mullis
b. Hamilton O. Smith
c. Maxam Gilbert
d. Hamilton John
Answer- Hamilton O. Smith
Que- Commonly used restriction enzyme is
a. pSC 101
b. pBR 322
c. EcoRI
d. All of these
Answer- EcoRI
Que- Natural extrachromosomal circular DNA molecules earrying genes for antibiotic resistance and fertility
a. Recombinant DNA
b. Chimaeric DNA
c. Lambda phage
d. Plasmids
Answer- Plasmids
Que- Which one has antibiotic resistance gene for tetracycline and ampicillin?
a. pSC 101
b. pBR 322
c. pCR 322
d. None of these
Answer- pBR 322
Que- The enzyme which seals the foreign DNA into the vector is
a. Restriction endonuclease
b. DNA polymerase
c. DNA ligase
d. DNA mutase
Answer- DNA ligase
Que- Chimaeric DNA is also known as
a. Recombinant DNA
b. Complementary DNA
c. Vector
d. Plasmid
Answer- Recombinant DNA
Que- Lambda phage is
a. Virus
b. Bacterium
c. Plasmid
d. Host cell
Answer- Virus
Que- A genomic library is a collection of
a. Bacterial clones
b. Bacteriophage clones
c. Viral clones
d. Both a and b
Answer- Both a and b
Que- A single stranded nucleotide sequence that will hybridize into a certain piece of DNA is
a. Primer
b. Probe
c. Genome
d. Both a & b
Answer- Both a & b
Que- Which statement is not true about PCR?
a. Developed by Kary Mullis
b. Take its name from DNA polymerase
c. Is not very specific
d. Taq polymerase is used
Answer- Is not very specific
Que- Taq polymerase is extracted from a bacterium
a. Floral aquaticus
b. Taq aquaticus
c. Thermus floral
d. Thermus aquaticus
Answer- Thermus aquaticus
Que- DNA analysis is done to
a. Diagnose viral infections
b. Identify criminals
c. Determine evolution
d. All of these
Answer- All of these
Que- A method of DNA sequencing in which DNA threads are chemically cut into pieces of different sizes is
a. Sanger's method
b. Maxam-Gilbert method
c. Hamilton's method
d. Vortex method
Answer- Maxam-Gilbert method
Que- Human genome is ______ times larger than any other genome sequenced so far
a. 45.0
b. 35.0
c. 25.0
d. 15.0
Answer- 25.0
Que- Organisms that have had a foreign gene inserted into them are
a. Transformed organisms
b. Transgenic organisms
c. Transfigured organisms
d. Recombinant organisms
Answer- Transgenic organisms
Que- Some transgenic bacteria produce a dipeptide sweetener called
a. Ultrasweet
b. Disweet
c. Monosweet
d. Neutrasweet
Answer- Neutrasweet
Que- Transgenic plants are produced when foreign genes are introduced into
a. Mature plant embryo
b. Immature plant embryo
c. Roots
d. Leaves
Answer- Immature plant embryo
Que- Protoplasts are plant cells from which
a. Cell walls are removed
b. Nucleus is removed
c. New organelles are added
d. Vacuoles are taken out
Answer- Cell walls are removed
Que- A weed engineered to produce a biodegradable plastic in cell granules is
a. Mouse-cat cress
b. Mouse weed
c. Mouse-eared cress
d. None of these
Answer- Mouse-eared cress
Que- An antibody made by soybeans can be used to treat
a. Herpes zoster
b. Sickle cell anemia
c. Measles
d. Genital berpes
Answer- Genital berpes
Que- In vortex method of transgenic animals gene is inserted
a. By hand
b. Into egg
c. Both by hands and into eggs
d. Is not applicable
Answer- Into egg
Que- For biotechnology products which is the preferable vehicle
a. Urine
b. Milk
c. Sweet
d. Hairs
Answer- Urine
Que- Cumulus cells are those that
a. Remain with follicular cells after ovulation occurs
b. Form corpus luteum
c. Form lining of the ovary
d. Cling to the egg after ovulation occurs
Answer- Cling to the egg after ovulation occurs
Que- Two methods for gene therapy are
a. In-vivo and ex-vitro
b. Ex-vivo and in-vivo
c. Both of these
d. None of these
Answer- Ex-vivo and in-vivo
Que- In cystic fibrosis patient lacks a gene for the transmembrane carrier of the
a. Magnesium ion
b. Calcium ion
c. Cholesterol
d. Chloride ion
Answer- Chloride ion
Que- Plasmid do not carry gene for
a. Antibiotic resistance
b. Fertility
c. Growth
d. Both b and c
Answer- Growth
Que- Full set of genes of an individual is called
a. Genotype
b. Genomic library
c. Genome pool
d. Genome
Answer- Genome
Que- Substance used to terminate DNA at different points in Sanger's method is
a. Deoxyribonucleotide triphosphate
b. Dideoxyribonucleotide triphosphate
c. Deoxyribonucleotide triphosphate
d. Dideoxyribonucleoside triphosphate
Answer- Dideoxyribonucleoside triphosphate
Que- Transgenic bacteria are produced in large vats called
a. Transducer
b. Biomultiplier
c. Bioreactor
d. Culture media
Answer- Bioreactor
Que- Which of the following is correct about SCID?
a. Common in children as well as in adults
b. It is an immune disorder
c. Is due to deficiency of adenosine diaminase
d. Both b and c
Answer- It is an immune disorder
Que- Tissue culture does not involve
a. Growth of tissue in artificial medium
b. Asexual reproduction
c. Use of meristem
d. Use of generative nucleus in pollen culture
Answer- Use of generative nucleus in pollen culture
Que- Plants are totipotent because
a. Each cell has full genetic potential of the organism
b. A single cell could become a complete plant
c. Both a and b
d. Because they have lesser potential for tissue culturing
Answer- A single cell could become a complete plant
Que- Coconut milk contains the plant hormone
a. Auxins
b. Cytokinins
c. Gibberallins
d. All of these
Answer- Cytokinins
Que- Cell suspension cultures of
a. Cinchona produces quinine
b. Digitalis lanata produce digitoxin
c. Both a and b
d. None of these
Answer- Both a and b
Que- A device that bombards a callus with DNA coated microscopic metal particles is
a. DNA gun
b. DNA shooter
c. Particle gun
d. All of these
Answer- Particle gun
Que- Salt tolerant plants are
a. Cadabidopsis
b. Nemodopsis
c. Saltdopsis
d. Arabidopsis
Answer- Arabidopsis
Que- Which of these is a true statement?
a. Both plasmids and viruses can serve as vectors.
b. Plasmids can carry recombinant DNA but viruses cannot
c. Vectors carry only the foreign gene into the host cell.
d. Only gene therapy uses vector.
Answer- Both plasmids and viruses can serve as vectors.
Que- Which of these would you not expect to be a biotechnology product?
a. Vaccine
b. DNA probes
c. Proteins
d. Steroid hormones
Answer- Steroid hormones
Que- Which of these is incorrectly matched?
a. Protoplast-plant cell engineering
b. RFLPs-DNA fingerprinting
c. DNA polymerase-PCR
d. DNA ligase-Mapping human chromosome
Answer- DNA ligase-Mapping human chromosome
Que- The process that has transformed life on earth from its earliest forms to vast diversity is
a. Mutation
b. Evolution
c. Migration
d. Genetic drift
Answer- Evolution
Que- Carolus Linnaeus was believer of
a. Special creation
b. Natural selection
c. Catastrophism
d. Inheritance of acquired characters
Answer- Special creation
Que- Which scientist does not match his achievements
a. Lamarck published his theory of evolution
b. Lyell published principles of geology
c. Malthus published essay on principle of population
d. Cuvier published papers on inheritance
Answer- Cuvier published papers on inheritance
Que- Archaebacteria can survive at
a. 150?C
b. 300?C
c. 120?C
d. 200?C
Answer- 120?C