I would say fossilization
Given:
Allele for green pod colour = Gg (Heterozygous)
Allele for Yellow pod colour = gg (Homozygous)
Explanation:
Parents: Gg x gg
When this two parent are crossed, it leads to the following F1 generation (off springs):
<em>• Gg (green colour pod)
</em>
<em>• Gg (Green colour pod)
</em>
<em>• gg (Yellow colour pod)
</em>
<em>• gg (Yellow colour pod)
</em>
Form the produced offspring it can be inferred that the allele combination for green colour pod is Gg. Among the four off springs obtained 2/4 are green colour pod and 2/4 are yellow colour pod.
This might have been the cause of not being exposed to this specific pollen during his years in Chicago. Allergic reactions can develop when the stimuli presented even when its not contagious causes the immune system to trigger and act in a defensive stance. This delayed effect may have been the cause of the sudden expression of the immune system.
Answer:
Both parents have the genes for yellow peas and green peas
Explanation:
If a plant has inherited one yellow peas gene and one green peas gene, the plant will produce yellow peas because (as you mentioned) yellow peas are dominant. that means the parents are heterozygous (Cc). If both parents have the gene versions Cc, then there is a 25% chance the offspring would get the gene version cc, coding for green peas.
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