Question

The flowchart below shows the three generations of a cross between a pea plant that has yellow pods and a pea plant that has green pods. Green pods are the dominant trait. The flowchart is missing the labels that describe the traits.


A flow chart is shown. A and B both go to C. C goes to both D and E.

In which squares should the phrase “Green pods” appear?
A and D only
B and E only
A, C, and D only
A, B, C, D, and E

Answer 1

To determine where the phrase "Green pods" should appear in the flowchart, we need to understand the context of the traits and the generations in pea plants. Given that green pods are the dominant trait, we can analyze the flowchart as follows:

1. **A** would represent the parent generation, where the yellow pod plants (recessive trait) and green pod plants (dominant trait) are present. Since green is dominant, there will be green pods in the offspring.

2. **B** would also represent another parent with green pods. Therefore, B also represents green pods.

3. **C** is the F1 generation where the offspring from A and B are combined. Since both parents include green pod alleles, this generation would also exhibit green pods.

4. **D and E** would represent the F2 generation and depend on the combinations of traits had from the F1 generation. If at least one of the parents in the F1 generation had the dominant green pod trait, the resulting offspring (D) would still likely exhibit green pods.

Given this logic, the phrase "Green pods" should appear in:

- **A** (one parent has green pods)
- **B** (the other parent has green pods)
- **C** (the offspring from A and B, which would also express green pods)
- **D** (offspring from F1 that continue to express green pods from dominant trait)

Therefore, the phrase "Green pods" should appear in squares A, B, C, and D.

The answer is: **A, B, C, D, and E.**