A person produces a mutated C3 protein resulting in C3a failing to stick, but enzymatic function is not affected. Complement activation in this individual would result in which of the following?
A. MACs would form but inflammation would not occur.
B. Phagocytes would not be attracted to the site of infection.
C. Phagocytes would be attracted to the site of infection but phagocytosis would be impaired.
D. Phagocytosis would be facilitated but chemotaxis by phagocytes would be reduced.
E. MACs would not form.
Answer: C
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Based on the theory of natural selection, how would a beneficial mutation change the gene pool?
a. The beneficial mutation would spread slowly throughout the population increasing the frequency of the mutation. b. The beneficial mutation would spread rapidly throughout the population increasing the frequency of the mutation. c. The beneficial mutation would not spread throughout the population so the gene pool would not be affected. d. The beneficial mutation would spread rapidly throughout the population increasing the frequency of the mutation, but then slow down over time.
Of all the different codons that exist, three of them
a. are involved in mutations. b. do not specify a particular amino acid. c. cannot be copied. d. do not specify a particular amino acid and are signals to begin translation. e. do not specify a particular amino acid and are signals to terminate translation.
Identify and briefly describe the labeled structures of the long bone in this picture. A: ________B: ________C: ________D: ________E: ________F: ________G: ________
What will be an ideal response?
Assume you are an evolutionary biologist who is using coat coloration in several closely related species to reconstruct their evolutionary history
If you find that the coat color trait is symplesiomorphic, what can you do to resolve the species' evolutionary relationships? What will be an ideal response?