Question

When two pink flowers ​(RW​) are​ crossed, there are four equally likely possible outcomes for the genetic makeup of the​ offspring: red ​(RR​), pink​(RW​), pink​(WR​), and white ​(WW​). If two pink snapdragons are​ crossed, what is the probability that the offspring will be​ (a) pink​, ​(b) red​, and​ (c) white​?

Answer 1

Answer:

a) 50% chance of being pink

b) 25% chance of being red

c) 25% change of being white

Explanation:

Since neither the R allele or W allele is dominant over the other, this is codominance. If 2 pink ones are crossed, that means both of them are RW

If we draw out the punnet square

     R      W

R   RR   RW

W  RW  WW

There is a 1:2:1 ratio of Red to Pink to White

Therefore

a) 50% chance of being pink

b) 25% chance of being red

c) 25% change of being white