Taylor conducted the experiments to prove semi-conservative mode of chromosome replication on

(1) Vinca rosea

(2) Vicia faba

(3) Drosophila melanogaster

(4) E. coli

Semi-conservative replication of DNA was first demonstrated in

(1) Drosophila melanogaster

(2) Escherichia coli

(3) Streptococcus pneumoniae

(4) Salmonella typhimurium

How many times can the nuclear DNA replicate during the life cycle of a cell?

(1)Only once

(2)Twice

(3)Many times

(4)Does not replicate at all

In DNA replication, the two strands of a daughter DNA molecules are derived as follows

(1) one strand from parent DNA and the other freshly synthesized

(2) both strands from parent DNA

(3) both strands synthesized as templates on parent strands

(4) both strands synthesized on RNA templates of parent strands

DNA replication in most organisms is

(1)conservative and continuous

(2)semi-conservative but discontinuous

(3)semi-conservative and semi-discontinuous

(4)semi-conservative but continuous