Species A is divided by a newly formed river to become two populations. These populations diverge to become two different species, B and C. If the river is dammed upstream, eliminating an isolating mechanism between B and C, what will happen?
A) Species B and C will be considered subspecies.
B) Gene flow will resume.
C) Species B and C will remain genetically isolated.
D) Species will unite to form a hybrid species, D.
Answer: C
You might also like to view...
In horses, black coat color is influenced by the dominant allele (B), and chestnut coat color by the recessive allele (b)
Trotting gait is due to a dominant gene (T), pacing gait to the recessive allele (t). Give the genotype and phenotype of the horse you would use in a testcross to determine the genotype of a black trotter.
The spermatids are the cells in Figure 50-1 that are labeled:a
1.
b. 2.
c. 3.
d. 5.
e. 6.
What is the nutritional mode of most bacteria?
a. autotrophy b. heterotrophy c. chemoautotrophy d. photoheterotrophy e. chemoheterotrophy
A student observes a flask containing a mixture of yeast, water, and a carbohydrate; the top of the flask is covered by a balloon. After 30 minutes, what waste products would she expect to find in the flask and balloon?
A carbon dioxide and ethyl alcohol B carbon dioxide and lactic acid C oxygen and glucose D oxygen and starch