What do you understand by DNA replication?

Name the base that is found in nucleotide of RNA only.

What is codon?

What are vitamins?

Name the vitamin whose deficiency causes night blindness.

Name the vitamin whose deficiency causes scurvy.

Name the vitamin whose deficiency causes bleeding gums.

Name the vitamin which is responsible for proper clotting of blood.

Give one source and one use of vitamin B₆.