BIO SCI 1A Lecture Notes - Lecture 7: The Fluid, Honey Possum, Calliphoridae
Document Summary
Natural selection works on individuals, it is measured by populations. 2 organisms can only have 1 most common ancestor. Coevolution: species that mutually influence each other"s evolution. Going on for more than 100 million years. Result: flower structures have become incredibly diverse and complex. Birds, bees, ants, flies visit flowers to get pollen or nectar. Nectar is a saccharine secretion of plants to attract animals. Birds and others then carry pollen from one flower or plant to another. Result: carriers contribute to genetic diversity of plant population. Some yucca plants pollinated by only one kind of moth. Adaptation, strategy, deception, cheating, advertising, beauty, coevolution, timing. Organisms plants and animals (not counting humans) do not plan or think about or. Design to be deceptive or attractive or to cheat. Rather, these organisms that evolve these traits are better adapted and have more offspring. Film notes: sexual encounters of the floral kind.