AP BIOLOGY

Detailed explanation-1: -Deoxyribonucleic acid (abbreviated DNA) is the molecule that carries genetic information for the development and functioning of an organism. DNA is made of two linked strands that wind around each other to resemble a twisted ladder-a shape known as a double helix.

Detailed explanation-2: -Genetic instability observed in disease is termed an “expansion mutation” when the mutation is an increase in the copy number of a repeated unit, commonly a di-or trinucleotide. While the expansion mutation is well characterized in disease, the mechanism by which expansion occurs is not clear.

Detailed explanation-3: -The molecules inside cells that carry genetic information and pass it from one generation to the next. Also called DNA.

Detailed explanation-4: -Solution : Deoxyribonucleic acid.

Detailed explanation-5: -Each gene’s code uses the four nucleotide bases of DNA: adenine (A), cytosine (C), guanine (G) and thymine (T)-in various ways to spell out three-letter “codons” that specify which amino acid is needed at each position within a protein.