Which of the following statements is false?
a. The tissues of arthropods are bathed with hemolymph, which delivers oxygen to their
cells.
b. In an open circulatory system the heart is still responsible for pumping oxygen-rich fluid.
c. Earthworms have a central heart that pumps blood to all their tissues.
d. Blood vessels are found in the open circulatory systems common to some invertebrates.
e. Hemocyanin is the oxygen transport pigment found in the open circulatory system of
invertebrates
C
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How many microhabitats does a redwood provide for other organisms?
a. None, but it has its own microhabitat with specific resource requirements. b. None, but many different organisms share its habitat. c. A few, because other organisms live on trees. d. Many, redwoods create a variety of microhabitats because of their large size.
Red-green color blindness is an X-linked recessive trait. Two normal-vision parents have a color-blind son. Indicate
the genotype and phenotype of each parent and the son. What will be an ideal response?
In his analysis of rII in phage, Benzer assayed complementation
Suppose you try your hand at this with several mutants and get the following results (+ = complementation): 42 and 62 + 42 and 83 – 62 and 63 – 62 and 74 + 42 and 74 – 42 and 75 + 62 and 75 – Mutation 42 has previously been shown to be in a different gene than mutation 62. What can you conclude? A) Mutations 42 and 75 are in the same gene. B) Mutations 62 and 74 are in the same gene. C) Mutations 62, 63, and 74 are in the same gene. D) Mutations 42 and 74 are in the same gene. E) Mutation 63 is not in the same gene as either 62 or 42.
If a pink snapdragon is self-fertilized, the offspring are red, pink, or white. What type of inheritance pattern does flower color exhibit in this example?
A. codominance B. incomplete dominance C. recessive D. incomplete recessive E. dominance