61. Tiktaalik either crawled or paddled in shallow tropical streams about 380 MYA, during the late Devonian period. These shallow waters often became anaerobic. What selective advantage would Tiktaalik have under these conditions?
A. It could crawl on shore and feed on birds and reptiles that were on land.
B. It could lift its head out of the water and breathe air through its gills.
C. It could crawl out of the water and walk over to new shallow streams.
D. It could lift its head out of the water and breathe air through its lungs.
E. It could swim better than fish.
D. It could lift its head out of the water and breathe air through its lungs.
You might also like to view...
The purpose of the distasteful odor emitted from the stinkhorn fern is to
a. attract flies. b. discourage predators. c. mimic another fungus. d. prevent plants from growing nearby.
A tissue is represented by a group of __________ adapted to carry out __________
a. closely associated, similar cells; specific functions b. closely associated, different cells; specific functions c. loosely associated, different cells; different functions d. loosely associated, different cells; specific functions e. closely associated, similar cells; different function
Rabbit muscle myosin will bind to actin from an amoeba. How can this be?
A. The myosin from amoeba and rabbits is similar due to a distant common ancestor. B. The differences in myosin between amoeba and rabbits are not seen in the actin binding site of myosin. C. Proteins are more likely to change in nonfunctional areas. D. The myosin from amoeba and rabbits is similar due to a distant common ancestor, and the differences between them are not seen in the actin binding site. E. All of the answer options are all correct.
What is the phenotype of an individual who is heterozygous for dimples?
A) Dd B) DD C) dd D) None of the above