The map distance in a certain organism between genes A and B is 8 units, between B and C is 4 units and between C and D is 12 units. Which one of these gene pairs will show more recombination frequency? Give reason in just one single sentence in support of your answer.

Explanation

To determine which gene pair will show more recombination frequency, we can follow these steps:

### Step-by-Step Solution

1. **Understand Recombination Frequency**: Recombination frequency is defined as the frequency with which a single chromosomal crossover will occur between two genes during meiosis. It is directly proportional to the distance between the genes.

2. **Identify the Map Distances**: The map distances provided are:
- Between genes A and B: 8 units
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