Transition type of gene mutation is caused when
$GC$ is replaced by $TA$
$CG$ is replaced by $GC$
$AT$ is replaced by $CG$
$AT$ is replaced by $GC$
A discrete multiprotein structure on the chromosome which contains enzymes for $DNA$ duplication is called as
Holandric genes are
Which of the following structures are present in core particle of nucleosome?
Lampbrush chromosomes are visible
How many chromosomes are present in an unfertilized egg