During transcription, if the nucleotide sequence of the $DNA$ strand that is being coded is $ATACG$; then the nucleotide sequence in the $mRNA$ would be
$UAUGC$
$UATGC$
$TATGC$
$TCTGG$
Histone occupies the major grooves of $DNA$ at an angle of
Assertion: Polytene chromosomes have a high amount of $DNA$.
Reason: Polytene chromosomes are formed by repeated replication.
Okazaki fragments are joined in $3$ correct sequence by
The salivary gland chromosomes in the dipteran larvae, are useful in gene mapping because