Biology Exam 2 Questions with Answers Graded A+

Polyandry - Correct Answer each female mates with more than one male during a breeding season Fitness benefits to females in polyandry - Correct Answer - Nuptial gifts (nutritional gift given to partner for copulation) - Reduced probability of mating with a poor-quality male (e.g., infertile, closely related, or genetically inferior) to increase fertilization success - Brood time may longer than speed at which females produce eggs positive assortative mating - Correct Answer matings between individuals of similar phenotypes negative assortative mating - Correct Answer matings between individuals of opposite phenotypes Positive and negative assortative mating are _____ on mating system - Correct Answer independent can Mating system may vary within a species? - Correct Answer yes Recall Outcrossing - Correct Answer mating among different individuals Autogamy - Correct Answer self-fertilization Apomixis - Correct Answer asexual seed formation; seed made from maternal tissue without meiosis and fertilization Adaptive value of autogamy and apomixis - Correct Answer • Long-distance dispersal + colonizing abilities • Can reproduce in absence of pollinators • Ability to rapidly exploit local resources or ephemeral favorable conditions Social Systems - Correct Answer The interactions within and between social units Three Fundamental components of social systems - Correct Answer - The group size and composition - The degree of cooperation among individuals - The mating system Three Fundamental components of social systems result from ______. - Correct Answer evolution of behaviors Size of the Social Groups is evolutionarily optimized so that group _______. - Correct Answer benefits outweigh the costs Size of the Social Groups depends on ______. - Correct Answer he abundance, distribution and type of resources