What will be possible blood group in children from the parents with $B$ and $AB$ blood groups?
$A, O$
$A, B, AB \;\&\; O$
$A, B, AB$
$B, O$
When Mendel self hybridised the $F_{1}$ plants $(RrYy)$, he found that dominant and recessive traits of one character are segregated in a
The movement of a gene from one linkage group to another is called
The number of chromosomes in Klinefelter’s syndrome is
Barr body in mammals represents
Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child ?