Multiple Choice
What does the following phylogeny of animals suggest? 
A) Dorsal-ventral patterning and a single nerve cord may have evolved in three independent lineages.
B) The common ancestor of invertebrates had a single nerve cord.
C) Arthropods have a unique dorsal-ventral pattern.
D) a and b
E) none of the above
Correct Answer:
Verified
Correct Answer:
Verified
Q3: Given the similar genetic network of developmental
Q4: Why do sloths have eight cervical vertebrae,
Q5: Tetrapods evolved from<br>A) aquatic invertebrate ancestors.<br>B) terrestrial
Q6: Gene duplication<br>A) results in genes that are
Q7: The gene recruitment for venom production<br>A) evolved
Q9: Which of the following snakes does not
Q10: Which of the following accurately describes the
Q11: Crystallins evolved through<br>A) gene recruitment from heat-shock
Q12: In Lenski's E. coli experiment, what evidence
Q13: How do insects get oxygen?<br>A) through diffusion