A cross was developed between 2 Rose plants. They showed contrasting traits Writ the height of the plant. The final result had 50 percent parental traits. This cross can be classified as:

Options

A. Cross exhibiting co-dominance
B. Test cross
C. Incomplete dominance
D. Trihybrid cross

Explanation

To solve the question regarding the cross between two rose plants showing contrasting traits in height, we can follow these steps:

### Step 1: Understand the Cross
We are dealing with a genetic cross between two rose plants that exhibit contrasting traits for height. This means that one plant may be tall while the other is short.

**Hint:** Identify the traits being compared (e.g., tall vs. short).

### Step 2: Analyze the Result
The final result of the cross shows that 50% of the offspring exhibit parental traits. This indicates that half of the offspring resemble one parent and the other half resemble the other parent.

**Hint:** Consider what it means for offspring to resemble parental traits.

### Step 3: Classify the Type of Inheritance
Given that 50% of the offspring show traits of the parents, this suggests that the inheritance pattern is likely not a simple dominant-recessive relationship. Instead, it may indicate a case of co-dominance or incomplete dominance.

**Hint:** Recall the definitions of co-dominance and incomplete dominance.

### Step 4: Determine the Classification
In co-dominance, both alleles in the genotype are fully expressed in the phenotype, resulting in offspring that display characteristics of both parents. In incomplete dominance, the phenotype is a blend of the two parental traits. However, since the question specifies 50% parental traits, it aligns more closely with co-dominance.

**Hint:** Think about how traits would appear in the offspring if both parental traits are equally expressed.

### Conclusion
Based on the analysis, the cross can be classified as **co-dominance** since the offspring exhibit traits that are characteristic of both parent plants, resulting in a 50% representation of each parental trait.

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