Evidence suggests that the minimum number of genes that must change to produce a new species is __________.
a. about 10
b. sever
c. about 1,000
d. one
e. several thousand
Answer: d. one
You might also like to view...
Chthamalus stellatus and Semibalanus balanoides do not coexist in the same tidal zones because
A. S. balanoides outcompetes C. stellatus. B. C. stellatus outcompetes S. balanoides. C. S. balanoides preys on C. Stellatus. D. the two species require different resources. E. the two species require different resources and C. stellatus outcompetes S. balanoides.
The separation of members of a gene pair into the gametes is called ____________________. Fill in the blank(s) with the appropriate word(s)
A commensal bacterium
A) does not receive any benefit from its host. B) is beneficial to its host. C) may also be an opportunistic pathogen. D) isn't capable of causing disease in its host. E) always causes disease in its host.
On which surface of an epithelial cell are microvilli located?