MCQ
Which people are at risk of getting a particular disease?
- AWho never had vaccine.
- BWho didn't receive all doses of vaccine.
- CWho travel to disease prevalent areas.
- ✓All of the above.
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$(i)$ presence of sickle - shaped $RBC$
$(ii)$ Blood not clot, non stop bleeding
$(iii)$ The heterozygous female transmit the disease to sons.
$(iv)$ Both heterozygous parents transmit the disease to offspring
Reason : In the primitive atmosphere, oxygen was involved in forming ozone