MCQ
The mutations which prove fatal for the organism are called:
- ASpontaneous
- BInduced
- CDeleterious
- DLethal
Explanation:
(1) Spontaneous mutations are the mutations that occur naturally (may arise from error in DNA replication or Spontaneous Deamination of 5-Methyl-cytosine)
(2) Induced mutations are the mutations that occurs due to external environmental causes or mutagens (such X-rays or UV radiations).
(3) Deleterious mutation is a genetic alteration that increases an individual's susceptibility or predisposition to a certain disease or disorder.
(4) Lethal mutation causes the death of an organism carrying the mutated genome.
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Reason : Praying mantis is green in colour which merges with plant foliage.
| Column $- I$ | Column $- II$ |
| $(A)$ Lamark | $(p)$ Finch bird |
| $(B)$ De Vries | $(q)$ Evening primerose |
| $(C)$ Darwin | $(r)$ Giraffes |
| $(s)$ Melanic moths |