Dog breeds, such as beagles, Border collies, German shepherds, were produced by the process of?
A. Natural selection
B. Artificial selection
C. Descent without modification
D. Inheritance of acquired characteristics

B.

Explanation:

Selective breeding (also called artificial selection) is the process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits (characteristics) by choosing which typically animal or plant males and females will sexually reproduce and have offspring together.

Artificial selection

Explanation:

:) i took bio last year and passed with an A

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.