The human upper arm bone (the humerus) is structurally similar to the upper wing bone of a bat. The structural similarity is an example of
A) analogous structures.
B) mutation.
C) vestigial structures.
D) homologous structures.
E) adaptation.
D
You might also like to view...
Laboratory diagnosis of T. gondii is confirmed by:
a. Giemsa stain. b. tissue culture. c. serologic testing. d. Western blot.
The overall ecological efficiency of most organisms is between
a. 1 and 2 percent. b. 2 and 5 percent. c. 5 and 20 percent. d. 10 and 50 percent. e. 50 and 75 percent.
In female humans, what is the function of LH?
a. it stimulates the releases of GnRH from the adrenal cortex b. it stimulates the maturation of ovarian follicles c. it stimulates cells in the follicle to secrete estrogens d. it encourages the completion of meiosis I and cytoplasmic division e. LH functions to do more than one of these
The results of dehydration reactions can be reversed by
A) condensation reactions. B) hydrolysis reactions. C) polymerization reactions. D) the addition of an amino group.