Determine the offspring for the following parents using a Punnett square:

Determine the offspring for the following parents using a Punnett square:


A yellow plant with the alleles OO
mates with
A green plant with the alleles pp


Orange (O) is dominant
Purple (p) is recessive


How many of the offspring will be orange?


1. 100%
2. 0
3. 50%
4. 25%

100% they all Op. Since O is dominant. You only need one allele to have an orange offspring.

They will all be orange because all four boxes will have Op