Question

What happens in synthesis phase during cell cycle?

• A. DNA synthesis
• B. Chromosome number becomes double
• C. Formation of two nuclei
• D. Synthesis of proteins & RNA

Answer 1

The correct option is A DNA synthesis

Cell duplicates its contents before the division. The s phase is characterized by synthesis of DNA where the DNA undergoes replication. It occurs between G${}_1$ phase and G${}_2$ phase. DNA replication is necessary to prevent genetic abnormalities which often lead to cell death or disease. It also helps in production of similar daughter cells.

So, the correct answer is option A.