#Question id: 5318
#Unit 11. Evolution and Behavior
Humans have 23 pairs of chromosomes, and chimps have 24 pairs of chromosomes. What is the most likely explanation for these differences in human and chimp genomes?
#Question id: 5028
#Unit 11. Evolution and Behavior
What is the probable sequence in which the following clades of animals originated, from earliest to most recent?
1. tetrapods
2. vertebrates
3. deuterostomes
4. amniotes
5. bilaterians
#Question id: 9230
#Unit 9. Diversity of Life Forms
Brown-headed cowbirds utilize fragmented forests effectively by ________.
#Question id: 11565
#Unit 7. System Physiology – Animal
Portal blood vessels connect two capillary beds found in the ________.
#Question id: 27085
#Unit 1. Molecules and their Interaction Relevant to Biology
The number of phi and psi angles in an isolated amino acid (not in a polypeptide chain) is: