Question

The Punnett square shown below represents the pattern of inheritance in dihybrid cross when yellow (Y) is dominant over white (y) and round (R) is dominant over wrinkled (r) seeds.

	YR	Yr	yR	yr
YR	F	J	N	R
Yr	G	K	O	S
yR	H	L	P	T
yr	I	M	Q	U

A plant of type 'H' will produce seeds with the genotype identical to seeds produced by the plants of

• A. Type M
• B. Type J
• C. Type P
• D. Type N

Answer 1

The correct option is D Type N

Gamete given in the block with H is YyRR. The same can be obtained in another column where YyRR comes and it is block N.
In the Punnet square, filling takes place by joining alleles in the row as well as column.