Which of the following is true about DNA?
It is a single-stranded molecules
Only one of the original DNA strands acts as a template during replication.
Both of the original DNA strands act as templates during replication.
Its replication takes place in the cytosol.
What is your choice?
To determine which of the statements about DNA is true, let's examine each option:
1. "It is a single-stranded molecule": This statement is false. DNA (deoxyribonucleic acid) is actually a double-stranded molecule consisting of two complementary strands that are held together by hydrogen bonds.
2. "Only one of the original DNA strands acts as a template during replication": This statement is false. During DNA replication, both of the original DNA strands act as templates. Each strand serves as a template for the synthesis of a complementary strand, producing two identical daughter DNA molecules.
3. "Both of the original DNA strands act as templates during replication": This statement is true. As mentioned in the previous statement, both strands of the original DNA molecule act as templates during replication.
4. "Its replication takes place in the cytosol": This statement is false. DNA replication occurs in the nucleus of eukaryotic cells, not in the cytosol. In prokaryotic cells, which lack a nucleus, replication occurs in the cytoplasm.
So, the correct statement about DNA replication is that both of the original DNA strands act as templates during replication.