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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| $(I)$ | $(II)$ | $(III)$ |
| $(a)$ Parasitism | $(i)\,-,0$ | $(A)$ Both get benefitted |
| $(b)$ Amensalism | $(ii)\,-,-$ | $(B)$ One get harmed other has no effect |
| $(c)$ Competition | $(iii)\,+,-$ | $(C)$ Both get harmed |
| $(d)$ Mutualism | $(iv)\,+,+$ | $(D)$ One is harmed and second is benefited |