1Then answer this question that looks at the inheritance of

1.Then answer this question that looks at the inheritance of 2 traits simultaneously. Pea flowers may be purple (P) or white (p). Pea seeds may be round (R) or wrinkled (r). How many of the offspring from the cross PpRr x PpRr will have white flowers and wrinkled seeds? Show the entire Punnett square for a dihybrid cross drawn out and answer the question in bold type above.

Solution

Answer:

PpRr x PpRr

Punnett square

PR

Pr

pR

pr

PR

PPRR (purple round)

PPRr (purple round)

PpRR(purple round)

PpRr (purple round)

Pr

PPRr (purple round)

PPrr (purple wrinkled)

PpRr (purple round)

Pp(purple wrinkled)rr

pR

PpRR(purple round)

PpRr (purple round)

ppRR(white round)

ppRr(white round)

pr

PpRr(purple round)

Pprr(purple wrinkled)

ppRr(white round)

Pprr (white wrinkled)

How many of the offspring from the cross PpRr x PpRr will have white flowers and wrinkled seeds?

Just one