MCQ
The gene frequency of a population changes ____.
- AIn one particular environment.
- BWhen the population decreases.
- CWhen the population live in different conditions.
- DWhen population reproduces asexually.
Explanation:
Genetic variation is the naturally occurring genetic differences among individuals of the same species. This variation permits flexibility and survival of a population in the face of changing environmental circumstances.
Factors affecting the gene frequency of population:
Physical distribution of individuals affects a population.
When a population interbreeds.
Random fluctuations in the numbers of alleles in a population.
Migration is the movement from one location to another.
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| | Bacterium | | Product |
| i. | Aspergillus niger | a. | Lactic acid |
| ii. | Acetobacter aceti | b. | Butyric acid |
| iii. | Clostridium butylicum | c. | Acetic acid |
| iv. | Lactobacillus | d. | Citric acid |
| Column $-I$ | Column $-II$ |
| $(A)$ Saccharomyces cerevisiae | $(i)$ Production of immuno-suppressive agent |
| $(B)$ Monascus purpureus | $(ii)$ Ripening of Swiss cheese |
| $(C)$ Trichoderma polysporum | $(iii)$ Commercial production of ethanol |
| $(D)$ Propionibacterium | $(iv)$ Production of blood-cholesterol lowering agents |