Reading: Chapter 24; Chapter 25, pp. 523-525 A. HOW ARE SPECIES DEFINED AND DISTINGUISHED? Wherever possible, biologists mark species boundaries by the biological species concept: "Species are groups of actually or potentially interbreeding nat
INTRODUCTION TO EVOLUTION
Reading: Chapter 22 A. WHAT IS EVOLUTION? 1. The reality of evolutionary change is the central fact of biological science. "Nothing in biology makes sense except in the light of evolution." Theodosius Dobzhansky (1900 1975)
Reading: Chapter 25, pp. 516-517; Chapter 28 Groups we will NOT mention in lecture, and that will NOT be on the final lecture exam: parabasalids (p. 580), euglenozoans (pp. 580-581), ciliates (pp. 584-585), golden algae (p. 586), rhizarians (pp.
EVOLUTION AND SYSTEMATICS
Reading: Chapter 26 A. HOW TO UNDERSTAND PHYLOGENETIC TREES
Fig. 26.5 In some trees the past is at the left and the present is at the right, as here; in others, the past is at the bottom and the present is at the top.
1. The tree
THE CELL CYCLE AND SEXUAL LIFE CYCLES
Reading: Chapter 12, pp. 228-238; Chapter 13
A. THE CELL CYCLE 1. The cell cycle is a controlled sequence of events that comprises cell growth and division.
Fig. 12.5 What activity does the cell engage in during the G