| Direction: Read the following and answer the questions that follows. |
| DNA is made up of millions of nucleotides. These are molecules composed of a deoxyribose sugar, with a phosphate and a base (or nucleobase) attached to it. These nucleotides are attached to each other in strands via phosphodiester bonds to form a 'sugar phosphate backbone'. DNA replication also known as semiconservative replication is the process by which DNA is essentially double. It is an important process that takes place within the dividing cell. |
| Semiconservative replication of DNA was first demonstrated in |
A) Streptococcus pneumoniae
B) Salmonella typh'imurium
C) Drosophila melanoqaster
D) Eschenchia coli
Correct Answer: D
Solution :
Eschenchia coli
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