If a father and son are both defective in red-greenn colour vision, is it likely that the son inherited the trait from his father? Comment.

Explanation

To determine if the son inherited the defective red-green color vision from his father, we need to analyze the genetics involved in this condition.

### Step-by-Step Solution:

1. **Understanding Sex Chromosomes**:
- Males have XY chromosomes, while females have XX chromosomes. The X chromosome carries the gene responsible for red-green color vision.

2. **Inheritance of Traits**:
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