Ruby crossed a tall pea plant with white flowers and a dwarf pea plant with violet flowers. She performed a __________

Options

A. Test cross
B. Dihybrid cross
C. Natural selection
D. Monohybrid cross

Answer

To solve the question, we need to identify what type of genetic cross Ruby performed when she crossed a tall pea plant with white flowers and a dwarf pea plant with violet flowers. Here’s a step-by-step breakdown of the solution:

### Step 1: Identify the Traits Involved
Ruby is crossing two pea plants that exhibit two different traits:
- **Height**: One plant is tall (dominant trait) and the other is dwarf (recessive trait).
- **Flower Color**: One plant has white flowers (dominant trait) and the other has violet flowers (recessive trait).

### Step 2: Determine the Type of Cross
In genetics, when two traits are being studied simultaneously, it is referred to as a **dihybrid cross**. This is because Ruby is considering both the height and flower color traits at the same time.

### Step 3: Conclusion
Since Ruby is crossing two plants that differ in two traits (height and flower color), the correct term for the type of cross she performed is a **dihybrid cross**.

### Final Answer
Ruby performed a **dihybrid cross**.

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