EVERYDAY SCIENCE

Detailed explanation-1: -DNA is made up of four building blocks called nucleotides: adenine (A), thymine (T), guanine (G), and cytosine (C). The nucleotides attach to each other (A with T, and G with C) to form chemical bonds called base pairs, which connect the two DNA strands.

Detailed explanation-2: -Genes are made up of sequences of DNA and are arranged, one after another, at specific locations on chromosomes in the nucleus of cells.

Detailed explanation-3: -DNA molecules are composed of four nucleotides, and these nucleotides are linked together much like the words in a sentence.

Detailed explanation-4: -Genes are composed of a substance called deoxyribonucleic acid, or DNA. DNA contains the biological instructions that allow for the development, growth, and reproduction of life. Chromosomes, which are located in each cell’s nucleus, contain genes.

Detailed explanation-5: -A gene is a short section of DNA. DNA is made up of millions of small chemicals called bases. The chemicals come in four types A, C, T and G. A gene is a section of DNA made up of a sequence of As, Cs, Ts and Gs.