In a missense mutation:A
All the amino acids beyond the mutation point are changed.
B. A nucleotide is added to the DNA.
C. A nucleotide is deleted from the DNA.
D. A single amino acid is altered.
E. The protein is always completely nonfunctional.
D
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Let P = purple flowers and p = white, and T = tall plants and t = dwarf. Of the 16 possible gamete combinations in the dihybrid cross between 2 double heterozygotes, how many would produce the phenotype white, tall?
A. none B. 1 C. 3 D. 9 E. 16 Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about dihybrid crosses? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
According to the intermediate disturbance
hypothesis, a. species richness becomes greatest in between disturbances of moderate intensity or frequency. b. a disturbance is necessary during succession in order to stabilize the community. c. community succession is highly predictable. d. competition and other species interactions are the most important factors in shaping community structure. e. a community reverts to a climax state after a disturbance.
Manipulating the joint in a position of least strain is called __________
Fill in the blank(s) with the appropriate word(s).
The founder effect differs from a population bottleneck in that the founder effect ________
A) requires a small population B) is a type of natural selection C) can occur only on an oceanic island colony D) involves the isolation of a small colony of individuals from a larger population