Point mutation may occur due to
Gain of a segment of $DNA$
Deletion of segment of $DNA$
Alternation in $DNA$ sequence
Change in a single base pair of $DNA$
If somatic cells of a human male contain single barrbody, the genetic composition of the person would be
Hugo de Vries formulated the “Mutation Theory'' based on the experiments he conducted on
Assertion : Phenylketonuria is a recessive hereditary disease caused by body’s failure to oxidize an amino acid phenylalanine to tyrosine, because of a defective enzyme.
Reason : It results in the presence of phenylalanine acid in urine.
Select incorrect one (w.r.t. reciprocal cross)
Mendel's experimental material was