18802.
Assertion: In recombinant DNA technology, human genes are often transferred into bacteria (prokaryotes) or yeast (eukaryote).
Reason: Both bacteria and yeast multiply very fast to form huge population, which express the desired gene.
Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
Assertion is true statement but Reason is false.
Both Assertion and Reason are false statements.
18803.The term cistorn, muton and recon were introduced by
Watson and Crick
S. Benzer
Meselson
Morgan
18804.Extranuclear genetic material is found in
Plastid and nucleus
Mitochondria and plastids
Nucleus and cytoplasm
Mitochondria and nucleus
18805.The molecular formulae of deoxyribose sugar and ribose sugar respectively are
C5 H10 O4 and C5H10O6
C5 H10 O4 and C5H10O5
C5 H10 O5 and C5H10O4
C5 H10 O5 and C6H10O4
18806.The nitrogen bases which pair with two hydrogen bonds are
Adenine and thymine
Adenine and Cytosine
Cytosine and guanine
Cytosine and adenine
18807.DNA differs from RNA in
Presence of deoxyribose sugar
Presence of thymine base
Property of replication
All the above
18811.In eukaryotic DNA replication, lagging strand is formed by
RNA fragments
Okazaki fragments
DNA fragments
Nucleotide fragments
18812.The enzyme DNA polymerase can work only in
3 → 5 direction
5 → 3 direction
Both the direction
5 → 5 direction
18813.Enzyme required for removing RNA primer during DNA replication is
DNA primase
DNA ligase
DNA polymerase I
DNA polymerase III
18814.Restriction endonucleases:
Are synthesized by bacteria as part of their defense mechanism
Are used for in vitro DNA synthesis
Are used in genetic engineering for ligation of two DNA molecules
Are present in mammalian cells for degradation of DNA when the cell dies
18815.DNA duplex shows
Right handed coiling and parallel
Right handed coiling and antiparallel
Left handed coiling and antiparallel
Left handed coiling and parallel
18816.During DNA replication, the reunion or recoiling of separated DNA strand is prevented by
Helix destabilizing protein
Single strnad binding protein
Rep protein
Both 1 and 2
18817.Which of the following enzyme is required to release the tension imposed by uncoiling of strands?
Endonuclease
DNA ligase
DNA gyrase
DNA helicase
18820.The ratio of purines and pyrimidines in mRNA is not 1:1 because the nitrogenous bases are
Unpaired
Paired
Paired only in loops
Paired in stems
18825.The transgenic plant flavr savr tomato carries an artificial gene for
Delay ripening process
Longer shell life
Added flavours
All of these
18827.Dolly sheep was genetically similar to
The mother from which nucleated fertilized egg was taken
The mother from which nuclear DNA of udder cell was taken
The surrogate mother
Both surrogate mother and nuclear donor mother
18828.Genome is
Genes on nuclear DNA
Nuclear DNA + mitochondrial DNA
Nuclear DNA + chloroplast DNA
Nuclear DNA + Mitochondrial DNA + Chloroplast DNA
18829.A technique of using very small metal particles coated with desired gene in the gene transfer is called
Electroporation
Microinjection
Liposome
Biolistics
18830.The complete set of chromosomal and extrachromosomal genes of an organisms is called
Genome
Gene pool
Gene bank
Gene library
18831.The study of all the proteins coded by the genome is called
Proteome
Proteomics
Genome
Protein formation
18832.Sequencing of genomic DNA is included under
Structural genomics
Functional genomics
Proteomics
Transgenesis
18833.Gene expression, regulation and phenotype production are studied in second phase of genome analysis called
Structural genomics
Functional genomics
Proteomics
Transmeiosis
18835.In forensic science which of the following is used?
Bacterial cloning
DNA foot printing
DNA fingerprinting
DNA cloning
18836.DNA fingerprinting is based on
Occurance of VNTRs
Knowledge of human karyotype
Cloned DNA
Recombinant DNA
18837.VNTRs represnets-
New terminal regions in DNA
Functional genes in the DNA
Split genes in the sample DNA
Specific non-coding sequences with unique tandem repeats
18838.Which ones produce androgenic haploids in anther cultures?
Anther wall
Tapetal layer of anther wall
Connective tissue
Young pollengrains
18839.Variations observed during tissue culture of some plants are known as
Clonal variations
Somatic variations
Somaclonal variations
Tissue culture variations
18840.Virus free plants can be obtained through
Anitibiotic treatment
Bordeaux micture
Root tip culture
Shoot tip culture
18841.To raising of plants from a small tissue in culture is known as
Macroproduction
Micropropagation
Tissue culture
Mass production
18842.Callus is
Tissue that forms embryo
an insoluble carbohydrate
Unorganised actively dividing mass of cells maintained in culture
Tissue that growth to form embryoid
18843.Biopatents are ______.
Right to use invention
Right to use biological entities
Right to use products
Right to use process
18844.African plant Pentadiplandra is used as______.
Low calories sweetner
2000 times sweeter agent
Sweetner for diabetic patients
All of these
18846.Protein helping in opening of DNA double helix in front of replication fork is
DNA gyrase
DNA Polymerase I
DNA ligase
DNA topoisomerase
18847.A set standards used to regulate own or community activity in relation to biological world is
Biopotency
Biopiracy
Biowar
Bioethics
18848.Biopiracy means
Use of biopatents
Thefts of plants and animals
Stealing of bioresources
Exploitation of bioresources without authentic permission
18849.Bioethcs is related to
Preventing biopiracy
Regulation of unethical activities likegene cloning in animals
Preventing theft of living materials
Moral guidance to the problems in biology
18851.A DNA nucleotide chain has AGCTTCGA sequence of other chain would be
TCGAAGCT
GCTAAGCT
TAGCATAT
GATCCTAG