Why does hair color vary among humans?

A. environment
B. genetics
C. both
D. neither


C

Biology & Microbiology

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The process illustrated in Figure 13-3 is:

a. DNA synthesis. b. translation. c. transcription. d. a frame shift mutation. e. protein synthesis

Biology & Microbiology

What is the correct sequence of structures through which the filtrate would pass?

1) Bowman's capsule 2) collecting duct 3) distal convoluted tubule 4) proximal convoluted tubule 5) ascending loop of Henle 6) descending loop of Henle a. 1 ? 3 ? 4 ? 5 ? 6 ? 2 b. 1 ? 4 ? 5 ? 6 ? 3 ? 2 c. 1 ? 6 ? 5 ? 4 ? 3 ? 2 d. 1 ? 3 ? 4 ? 2 ? 6 ? 5 e. 1 ? 4 ? 6 ? 5 ? 3 ? 2

Biology & Microbiology

Salmonella typhi

What will be an ideal response?

Biology & Microbiology

Match the nutritional category of microbe to its source of carbon and its energy source. Photoheterotroph

A) Carbon dioxide and simple inorganic chemicals B) Organic carbon and metabolic conversion of the nutrients from other organisms C) Organic carbon and sunlight D) Carbon dioxide and sunlight

Biology & Microbiology