A change in the gene pool due to chance results in ________.

A. environmental variation
B. natural selection
C. genetic drift
D. a large gene pool


C. genetic drift

Biology & Microbiology

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In QTL mapping, the parental strains are crossed and the F1 generation backcrossed to which of the following?

A. The F2 generation B. The parental generation C. A strain that is homozygous recessive for all markers D. A wild-type organism

Biology & Microbiology

Select the following phylum that includes protostome animals that are segmented, bilaterally symmetric, and have a chitinous exoskeleton.  

A.  Arthropoda B.  Annelida C.  Mollusca D.  Brachiopoda E.  Platyhelminthes

Biology & Microbiology

Photosynthesis is conducted in ___________

a. the cell wall b. chloroplasts c. the nucleus d. the cell membrane

Biology & Microbiology

The rates of photosynthesis and respiration in a plant are controlled by the temperature in the

A) soil. B) air. C) leaf. D) root.

Biology & Microbiology