Which of the following statements accurately describe variation in human skin color? Select all that apply.
A) Human skin color variations is mostly determined by the types and amounts of melanin present in the skin
B) Data supports a correlation between UV intensity and color variation
C) On average, the skin color of indigenous people around the world correlates with the UV intensity of their environments
D) Variations in human skin color can be quantified (measured)
E) All of the above
Answer: E) All of the above
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Most cancers require at least two mutations: 1) one in an oncogene, which encodes proteins that trigger cell division,
and 2) one in a tumor suppressor gene, whose protein products, in their unmutated form, play a key role in preventing the cell cycle from progressing if the DNA is damaged or in the absence of specific cues. Which class of proteins might be considered tumor suppressors?
a. Cdk inhibitors b. cyclins c. growth factor receptors d. microtubules e. transcription factors
Ammocoetes, the larval forms of lampreys, feed:
a. on suspended particles. b. on other fishes. c. on benthic deposits. d. by parasitizing other fish.
Who discovered transformation?
a. Gregor Mendel b. Fred Griffith c. Elie L. Wollman d. Joshua Lederberg
All of the following are early tongue structures, EXCEPT
A. Copula B. Epiglottal Swelling C. Lateral Swelling D. Medial Swelling (Tuberculum Impar) E. Foramen Cecum