Watson and Crick proposed that during DNA replication, the double strand is unwound and each parental strand is used as a template to generate a new daughter strand. The new and old strands then form a new DNA helix. What is this mode of replication called

Explanation:

1. In semi-conservative mode of replication, one strand of parental DNA is serve as a template and it synthesized a new complementary strand to itself and forming a double strand DNA, containing one parental strand and one new strand.

2. In semi-conservative mode of  replication, both DNA molecules are same to each other, because both the parental strands serve as template and both synthesize its complementary strand, as G always pairs with C and T pairs with A.

answer; i believe the correct answer is (a)0

we would need to see the picture to answer it