Birds that dive into the water from a height of 18 to 30 meters are called:
a. pelicans.
b. albatross.
c. tubenoses.
d. boobies.
e. puffins.
D
You might also like to view...
A fur color gene in rabbits has a white dominant (W) and brown recessive allele (w). The environment changes suddenly and none of the white rabbits survive. In a population of 10,000 rabbits the initial frequency of W in the pool was 0.7. How many generations would be required to eliminate all W alleles from the population? Assume that there is no mutation and the population meets all other Hardy-Weinberg conditions.
A. 1 B. 2 C. 5 D. 20 E. can never be eliminated
The region of an antibody molecule that recognizes and binds to an antigen is the
A. hinge region. B. variable region. C. constant region. D. base of the antibody molecule. E. heavy chain only.
Sharks detect motion in the water or waves by their:a
lateral lines. b. electroreceptors. c. keen olfaction. d. sight. e. dorsal fin
If lactose is accumulating outside of E. coli and is unable to enter, then which structural gene of the lac operon is most likely mutated?
A) lacY B) lacA C) lacZ D) lacX E) lacI