Please I really need your help.

Most crimes involve some evidence relating to the human body; for that reason, what related science is frequently used in forensic investigations? a)psychiatry b)physics c)botany d)biology

What will happen if two of the base pairs of the stand of the dna are switched

Consider the table. types of bacteria form shape associated disease coccus x strep throat bacillus rod shaped y spirillum spiral cholera which best describes x and y?