AIPMT MAINS2009Botany-Genetics
AIPMT MAINS 2009 Botany DNA Replication MCQ Question
Type: MCQ-conceptual-Medium-Class 12
Semiconservative replication of DNA was first demonstrated in:
A
Escherichia coli
B
Streptococcus pneumoniae
C
Salmonella typhimurium
D
Drosophila melanogaster
Correct Answer
Option A
Detailed Explanation
The semiconservative model of DNA replication was first demonstrated by Meselson and Stahl in Escherichia coli, showing that each daughter DNA molecule consists of one old and one new strand.
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