Cells know how to differentiate through a process called gene expression. It’s a specific combination of genes that are turned on and off.
Answer:
during DNA replication
Explanation:
During DNA synthesis, when an incorrect nucleotide gets inserted in daughter strand of DNA, DNA polymerase goes back by one nucleotide pair, excises the mismatched nucleotide and repairs error. Thus, the DNA polymerase checks for mutations at the time of DNA replication
I believe its A i hope that helps
Answer:
The answer is B
(also, this is chemistry not biology)
