Brett persistently injects himself with pain killers. this has greatly increased his chance of overdosing and dying. his behavior harms no one else. according to the dsm-5, is brett's behavior consistent with the definition of a mental disorder?

me and my friend did 2

the principle of segregation describes how pairs of gene variants are separated into reproductive cells. from his data, mendel formulated the principle of segregation. we now know that the segregation of genes occurs during meiosis in eukaryotes, which is a process that produces reproductive cells called gametes.