Question

_____ provides diversity in population.

• A. Genetic drift
• B. Cell division
• C. Fertilization
• D. Pollination

Hint:

Genetic diversity is important because it:
• Helps adaptation
• Supports evolution
• Improves survival of species

Answer 1

The Correct Option is A

Concept:
Variation and diversity are important features of populations. Diversity helps organisms survive changing environmental conditions and supports evolution. Genetic drift refers to random changes in gene frequencies in a population. These random genetic variations contribute to diversity among individuals.

Step 1: Understand genetic drift.
Genetic drift is:
• A mechanism of evolution
• Random change in allele frequency
• More noticeable in small populations These changes can increase genetic variation and diversity.

Step 2: Analyze the other options carefully.
Option (B): Cell division
Cell division mainly increases cell number. Does not directly explain population diversity. Incorrect. Option (C): Fertilization
Fertilization combines genes from parents, but the question specifically refers to diversity mechanism in population. Incorrect according to given options. Option (D): Pollination
Pollination transfers pollen grains. Not directly responsible for population diversity in this context. Incorrect.

Step 3: Choose the correct answer.
Thus, the factor providing diversity in population is: \[ \boxed{\text{Genetic drift}} \] Hence, \[ \boxed{(1)\ \text{Genetic drift}} \]