BIOLOGY 101 Study Guide - Final Guide: Sex Worker, Meiotic Drive, Russian Mafia
Document Summary
Some alleles are overrepresented in the gametes which are formed during meiosis causing one sex to be more common. Usually there is strong natural selection against meiotic drive but there are exceptions. Example of extreme sexual dimorphism = green spoon worm. 2mm male living in a 2m female - female is 2000 times size of the male. Male lives inside female gonad and gets nutrients from her. Sexual dimorphism: occurs when there is a differential in gamete size. Often the result of sexual selection so traits can be greatly exaggerated. Example of skewed sex ratio = pyemotidae (mites) Female has children in her body, mostly female, the males have sex with their sisters and they reproduce until the mother explodes open and only the females survive because the males have small legs (?) Common for males to lose an organ or die after fertilization.
