Why is it unwise to try to relate an organism's complexity with its size or number of cells?
A) A very large organism may be composed of very few cells or very few cell types.
B) A single-celled organism, such as a bacterium or a protist, still has to conduct all the complex life functions of a large multicellular organism.
C) A single-celled organism that is also eukaryotic, such as a yeast, still reproduces mitotically.
D) A simple organism can have a much larger genome.
E) A complex organism can have a very small and simple genome.
Four hypotheses on how populations might relate to one another along an environmental gradient.
Coronary circulation. (A) Coronary vessels portraying the complexity and extent of the coronary circ
Group Size
Population size
Beak size in finches during dry years increases because of strong selection