Question

Green pea seeds are recessive to yellow pea seeds.
If two heterozygous pea plants produced $1000$ offspring, approximately how many of them would be expected to be yellow?

• A. $1000$
• B. $750$
• C. $500$
• D. $250$

Answer 1

The correct option is B $750$

gametes	Y	y
Y	YY	Yy
y	Yy	yy

Green pea seeds ( yy ) are recessive to yellow pea seeds ( YY )in the given cross. When two heterozygous pea plants ( Yy ) are crossed the offsprings will be 75% ( 3/4 ) dominant and 25% (1/4) recessive according to punnet square i.e, YY, Yy and Yy. So, if 1000 individuals are produced than 750 will be dominant. Thus, the correct answer is option B.