Question

Proportion of progenies with round seed and red flowered pea plants if cross is made between WwRr and ww Rr would be

• A. $\frac{3}{8}$
• B. $\frac{1}{8}$
• C. $\frac{4}{8}$
• D. $\frac{2}{8}$

Answer 1

The correct option is A $\frac{3}{8}$

gametes	wR	wr
WR	WwRR=White flower and Round seed	WwRr=White flower and Round seed
Wr	WwRr=White flower and Round seed	Wwrr=White flower and wrinkled seed
wR	wwRR=Red flower and Round seed	wwRr=Red flower and Round seed
wr	wwRr=Red flower and Round seed	wwrr=red flower and wrinkled seed

Gene R control shape of seed- R(Round) is dominant over r(Wrinkled)

Gene W control color of flower- W(White) is dominant over w(Red).

Cross between WwRr x wwRr

Gametes by parent 1 = WR, Wr, wR,and wr

Gametes by parent 2= wR, and wr.

So, looking at the progenies formed in the table by the cross we find that 3 out of 8 progenies will have Round seed and red flowers.

So, the correct answer is '3/8'.