Question

Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers and the other has white, terminal flowers; all of the first generation of the offspring have red, axial flowers. The genes for flower color and location assort independently. If 1,000 second generation offspring resulted from the cross, approximately how many of them would you expect to have red, terminal flowers

Answer 1

Answer: 750

Step-by-step explanation:

Based off the first two sentences, we can conclude that red is the dominant allele and white is the recessive allele.

Let's say R = red and r = white.

The genoytypes of the parents are RR and rr. The genotype of the first generation are all Rr

The punnet square for the second generation is:

R r

R RR Rr

r Rr rr

We can see 3/4 crosses give us red. Now we can multiply 3/4 and 1000 to get 750.