AP BIOLOGY

Detailed explanation-1: -Inversions. An inversion occurs when a chromosome breaks in two places; the resulting piece of DNA is reversed and re-inserted into the chromosome.

Detailed explanation-2: -A deletion changes the DNA sequence by removing at least one nucleotide in a gene. Small deletions remove one or a few nucleotides within a gene, while larger deletions can remove an entire gene or several neighboring genes.

Detailed explanation-3: -A genetic change in which a piece of one chromosome breaks off and attaches to another chromosome.

Detailed explanation-4: -Inversions are a special type of mutation in which a piece of chromosomal DNA is flipped 180 degrees. For an inversion to occur, two breaks occur in a chromosome, the region between the breaks gets inverted, and the ends of the region get rejoined to the rest of the chromosome.