CBSE
Multiple Choice QuestionsVariation in gene frequencies within a population can occur by chance rather than by natural selection. This is referred to as
Genetic flow
Genetic drift
Random mating
Genetic load
Viroids have
ssRNA not enclosed by a protein coat
ssDNA not enclosed by a protein coat
dsDNA enclosed by a protein coat
dsRNA enclosed by protein coat
Munch hypothesis is based on
Translocation of food due to Turgor Pressure (TP) gradient and imbibition force
Translocation of food due to Turgor Pressure (TP) gradient
Translocation of food due to imbition force
None of the above
Genetic material found in Human Immunodeficiency Virus (HIV) is
Double stranded RNA
Single stranded RNA
Double stranded DNA
Single stranded DNA
hnRNA undergoes two additional processes. Out of them in one process an unusual nucleotide (methyl GPT) is added to the 5' end of the molecule. What would you call this?
Tailing
Splicing
Termination
Capping
Which of the following DNA sequences qualifies to be designated as a palindrome?
5'-GACCAG'3 in one strand
3'GACCAG-5' in one strand
5-GACGAG-3', 3'-CIGGIC-5'
5'-AGCGCT-3', 3'-TCGCGA-5'
The vector for T-DNA is
Thermus aquaticus
Salmonella typhimurium
Agrobacterium tumefaciens
Escherichia coli
Biolistic technique is used in
Gene transfer process
Tissue culture process
Hybridisation process
Germplasm conservation process
Probes, used in DNA fingerprinting, are initially
Single-stranded RNA
Mini-satellite
19base long oligonucleotide
All of the above
DNA replication occurs in
G1-phase
S-phase
G2-phase
M-phase
