If a heterozygous green pea plant were crossed with a homozygous recessive yellow pea plant, what statistical probability would there be that the resulting offspring were yellow pea plants? Enter your answer in a percentage below.

Question

Feel free to respond, "I don't know yet," or leave the question blank if you are unable to answer at this time.
a 50%
b 25%
c 15%
d 100%

Answer 1

To solve this problem, we need to understand the genetics of pea plant color.

Let's define the alleles:

• Green (dominant) = G
• Yellow (recessive) = g

A heterozygous green pea plant would have the genotype Gg, while a homozygous recessive yellow pea plant would have the genotype gg.

When we cross the two plants (Gg x gg), we can use a Punnett square to find the probabilities of the offspring's genotypes:

     |  g  |  g  |
-------------------
 G   | Gg  | Gg  |
-------------------
 g   | gg  | gg  |

From the Punnett square:

• 2 Gg (green) offspring
• 2 gg (yellow) offspring

This gives us 2 green offspring and 2 yellow offspring, meaning 50% of the offspring will be yellow pea plants.

Therefore, the probability that the resulting offspring will be yellow pea plants is 50%.

So the answer is: a 50%