Bio Notes February 19, 2008 Normalizing Selection Also known as "stabilizing selection" Reduces variation around mean or average Does NOT change the mean or average Characteristic of most populations Directional Selection Selection for "extreme" indi
Biology Textbook Notes CHAPTER 14- Is The Population Too Large? 14.1 A Growing Human Population Ecology- the field of biology that focuses on the interactions among organisms as well as between them and their environment. Population (from an ecologic
February 28, 2008 Eusociality (adj.): Animals that show an advanced level of social organization, in which a single female or caste produces the offspring and a sterile caste help raise the young. Caste (n.): a physically distinct group of individual
Bio March 4, 2008 Mechanical Isolation - Size and shape of reproductive organs may be crucial - Insects: great diversity in, particularly among males - Flowering plant morphology, small differences can prevent bees from transferring pollen from anoth
Bio 1a 3/13/08 What is ecology? o Definition: the study of the relationship between an organism(s) and its (their) environment o (Gr) oikos = home; logos = study o two principal questions are asked by biological ecologists Where do organisms live?