The genetic material in HIV is
single -stranded RNA
double-stranded RNA
single-stranded DNA
double-strande DNA
Which of the following lies between replication and translation?
transition
transversion
transcription
transduction
Restriction enzymes.
cut or join DNA fragments
are required in vectorless direct gene transfer
are endonucleases which cleave DNA at specific sites.
make DNA complementary to an existing DNA or RNA
A distinct mechanism, that usually involves a short segment of DNA with remarkable capacity to move from one location in a chromosome to another, is called
DNA replication
DNA transposons
DNA hybridization
DNA recombination
The chemical knives of DNA are
ligases
polymerases
endonucleases
transcriptases
Which of the following was not cosidered by Mendel?
test cross
back cross
Linkage
none of these
Genes that are involved in turning on or off the transcription of a set of structural genes are called
operator genes
redundant genes
regulatory genes
polymorphic genes
The promotor gene in lac operon
inhibits t-RNA translation
inhibits enzyme synthesis
inhibits m-RNA transcription
both'2' and '3'
The lac operon is an example of
arabinose operon
inducible operon
repressible operon
overlapping genes
PCR is related with
DNA cloning
amplification of DNA
DNA selective replication
all of these
