MCQ
The basic step in genetic modification of an organism is:
- AIdentification of DNA containing the desired gene
- BTransfer of marked DNA into host
- CTo preserve the transferred DNA in the host and transfer it to its progeny
- ✓All of the above
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$(i)$ Fleming, Chain and Florey were awarded the Nobel prize in $1945$
$(ii)$ Antibiotics have greatly improved our capacity to treat deadly diseases
$(iii)$ Penicillin was used to treat American soldiers wounded in World War I