The hybrid produced by cytoplasmic fusion is called
A sexual hybrid
Parasexual hybrid
Somatic hybrid
Protoplastic hybrid
Sometimes the separation of twins is incomplete and these are borne attached are remain so even after. Such twins are known as
Jumping genes in maize were discovered by
The gene which increases the frequency of mutation in other gene is referred to as
Linked gene are separated by
$21$ trisomy in humans causes