BIOLOGY 101 Study Guide - Midterm Guide: Isogamy, Anisogamy, Gamete
Document Summary
Sibling competition: usually balance between parties. Costs of maintaining territories: efforts involve signaling devices such as song or calling building nests. Costs of conflict with other suitors in male-male competition to get access to females. Being inattentive and vulnerable to predators during copulation. Anisogamy is term used when there is a large difference in gamete size: example chicken egg and chicken sperm, in these organisms there is potential asymmetry between energy investment in producing young. When gametes are same size term is isogamy. Young have energetic needs for growth and development and parents have to supply energy, either behaviorally, in gamete or through placenta/equivalent. Interest of young to demand nutrients and in interest of parent to limit demand in order to be able to reproduce again. Especially concern when one parent does all the care. Women who gave birth to sons first lived 34 months less than those who had daughters.
