Question

Give technical terms for the following:

1. A sudden heritable change in the gene.
2. Repeated units of DNA molecule.

Answer 1

1. Mutation.

1. A sudden heritable change in the gene is called mutation.
2. Mutations are alterations in the DNA sequence that are a major source of biological diversity.
3. These alterations can occur at a variety of levels and have a wide range of repercussions.

B. Nucleotides

1. Repeated units of DNA molecule is called nucleotides.
2. Nucleic acids are made up of nucleotides, which are the basic building blocks.
3. Long chains of nucleotides make up RNA and DNA, which are polymers. A sugar molecule (ribose in RNA or deoxyribose in DNA) is bonded to a phosphate group and a nitrogen-containing base to form a nucleotide.