AP BIOLOGY

Detailed explanation-1: -Chromosome mutations are potentially more dangerous than gene mutations because they can be swapped and transferred to that parent’s child. When a chromosome mutates, whole sets of genes are altered versus 1 gene.

Detailed explanation-2: -No; only a small percentage of variants cause genetic disorders-most have no impact on health or development. For example, some variants alter a gene’s DNA sequence but do not change the function of the protein made from the gene.

Detailed explanation-3: -A point mutation-the change of a single nitrogen base in a DNA sequence-is usually the least harmful type of DNA mutation.

Detailed explanation-4: -Changes that affect the structure of chromosomes can cause problems with growth, development, and function of the body’s systems. These changes can affect many genes along the chromosome and disrupt the proteins made from those genes.