According to "evo-devo" thinking, an organism's body form can be substantially changed
A) only through multiple mutations that produce a large number of new proteins.
B) through mutations that change sexually selected traits.
C) only when changes in the environment directly alter the major protein-coding genes in the organism's genome.
D) through mutations or changes in the expression of one or a few genes that regulate development.
Answer: D
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Which of the following are incorrectly matched?
A. gene A, sepal formation, whorl 1 B. gene B, petal formation, whorl 2 C. gene E petal formation, whorl 2 D. gene C stamen formation, whorl 3 E. gene B carpel formation, whorl 4
Sieve tube elements are components of the ____
a. ground tissue
b. phloem c. dermal tissue d. meristem e. xylem
Activity of the two halves of the cerebrum is coordinated by means of the __________ that connects them. Fill in the blank(s) with the appropriate word(s)
Photophosphorylation during photosynthesis differs from oxidative phosphorylation during cellular respiration in that
A) it involves an electron transport chain. B) energy is stored in the form of a proton (H+) concentration difference. C) generation of ATP is driven by a flow of protons (H+) through ATP synthase. D) the final electron acceptor is NADP+ and not oxygen.