The cutaneous membrane is also known as
a. the stomach lining.
b. the skin.
c. the brain.
d. the heart lining.
e. the lung lining.
B
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In the ABC model of floral determination, a different combination of the three genes specifies each floral organ. Which gene works in combination with the other two?
A. A B. B C. C D. florigen E. ethylene
Meat, fruits, and vegetables could be contaminated with E. coli strains toxic to humans when they come in contact with
animal I. feces ____. II. urine III. blood
a. I only b. I and II c. II and III d. I and III e. I, II, and III
Animals that are hermaphroditic usually
a. fertilize their own eggs. b. cross-fertilize. c. donate eggs to other individuals. d. cannot reproduce sexually. e. fit all of these descriptions.
Which of the following examples is best explained by the process of convergent evolution?
A. The wings of birds and butterflies being used for flight. B. Wolves and coyotes both producing milk for their young. C. Both mice and rats having a tail. D. A human cell and a fruit fly cell both going through the process of transcription and translation in order to produce a gene.