Sum of all the genes is a population is called

Options

A. genotype
B. gene pool
C. gene factor
D. genome

Answer

To solve the question "Sum of all the genes in a population is called," we will analyze each of the provided options step by step.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the term that describes the total collection of all genes present in a population.

2. **Evaluate Option 1: Genotype**
- **Definition**: Genotype refers to the genetic constitution of an individual organism. It is specific to an individual and does not represent the entire population.
- **Conclusion**: This option is incorrect.

3. **Evaluate Option 2: Gene Pool**
- **Definition**: The gene pool is defined as the total collection of genes and their alleles in a population. It encompasses all the genetic information available in that population.
- **Conclusion**: This option is correct as it directly answers the question.

4. **Evaluate Option 3: Gene Factor**
- **Definition**: The term "gene factor" is often used interchangeably with "gene," referring to the basic unit of heredity. It does not represent the sum of all genes in a population.
- **Conclusion**: This option is incorrect.

5. **Evaluate Option 4: Genome**
- **Definition**: The genome is the complete set of genes or genetic material present in an organism, usually referring to a single individual’s haploid set of chromosomes. It does not represent the entire population.
- **Conclusion**: This option is incorrect.

6. **Final Answer**: Based on the evaluations, the correct answer to the question is **Option 2: Gene Pool**.