The evolutionary process by which new species arise is called ________
a. gene flow
b. genetic drift
c. speciation
d. natural selection
e. directional selection
c
You might also like to view...
Gene therapy
a. has not yet been used successfully with mammals. b. is a surgical technique that replaces defective genes with normal genes. c. has been used successfully to treat victims of autosomal dominant disorders by replacing the dominant allele with a recessive allele. d. is a genetic engineering technique that replaces defective alleles with normal ones. e. is none of these.
Which of the following is a function of the thymus?
a) production of red blood cells b) secretion of antibodies c) production and maintenance of stem cells d) site for the maturation of lymphocytes
What does water potential refer to?
a. a relative value that is defined in reference to distilled water at atmospheric pressure of 10 MPa b. a relative value that is defined in reference to pure water at atmospheric pressure of 10 MPa c. a relative value that is defined in reference to pure water at atmospheric pressure of 0 MPa d. a relative value that is defined in reference to distilled water at atmospheric pressure of 0 MPa
Change in the allele frequency due to chance alone is known as
A. inbreeding. B. genetic drift. C. founder effect. D. bottlenecks. E. gene flow.