MCQ
Sudden inheritable change is called as:
- ARecombination
- BMutation
- CNatural selection
- DSegregation
Explanation:
Mutations occur in genetic material and hence are inherited from one generation to the next.
The majority of mutations are harmful and hence, usually not conserved for generations.
However, a tiny fraction of them may be beneficial and these will be passed on through generations.
Mutations are one of the fundamental causes of genetic variations in a population.
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$I$. Removal of $80\; \%$ tigers from an area resulted in greatly increased growth of vegetation.
$II.$ Removal of most of the carnivores resulted in an increased population of deers.
$III.$ The length of food chains is generally limited to $3$ to $4$ trophic levels due to energy loss.
$IV.$ The length of food chains may vary from $2$ to $8$ trophic levels.
Which two of the above statements are correct?