MCQ
Penicillin was discovered by
- AWaksman
- BDubois
- CRobert Koch
- ✓A. Fleming
(d) Alexander Flemming ($1929$) discovered the antibiotic penicillin and showed its effectiveness against many disease producing bacteria.
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$(i)$ Sickle - cell anaemia is controlled by three pairs of allele.
$(ii)$ Trisomy is chromosomal disorder.
$(iii)$ $47$ chromosome present in person whose having Turner's syndrome.