In a trihybrid cross of a tall, purple-flowered pea plant with round seeds (TtPp

ID: 84873 • Letter: I

Question

In a trihybrid cross of a tall, purple-flowered pea plant with round seeds (TtPpRr) with a tall, white-flowered pea plant with wrinkled seeds (Ttpprr), what is the probability of: Show your work to receive any credit! that a tall, white-flowered plant with wrinkled seeds will be produced? that a short, purple-flowered plant with round seeds will be produced? that a short, white-flowered plant with wrinkled seeds will be produced? that a tall, purple-flowered plant with round seeds will be produced?

Explanation / Answer

Answer-

The trihybrid cross of Mendel ratio is 27: 9: 9: 9:3:3:3:1

Tall (Tt)

TT , Tt

Tt, tt

white (pp)

Pp , pp

Pp, pp

wrinkled (rr)

Rr, rr

a) tall , white and wrinkled

probability of tall (Tt) will be 2 out of 4 i.e 2/4 = 0.5

white = pp is 2 out of 4 = 2/4=0.5

wrinkled is rr i.e 2/4 = 0.5

b) short , 1/4=0.25

purple , 2/4= 0.5

round, 2/4=0.5

c) short 1/4=0.5

white i/4=0.25

wrinkled 2/4- 0.5

d) short 1/4= 0.25

white 2/4= 0.5

wrinkled 2/4= 0.5

Tall (Tt) Purple (Pp) Round (Rr)