________ are infectious proteins that are responsible for several animal diseases, including scrapie and mad cow disease
Fill in the blank with correct word.
Answer: Prions
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Although inbreeding by itself does not affect allele frequencies, how might inbreeding indirectly affect allele frequencies over the course of many generations if natural selection was also occurring?
A. Inbreeding favors homozygotes. If a homozygote has a higher Darwinian fitness, inbreeding would accelerate the prevalence of the allele in the population. If a homozygote has a lower fitness, inbreeding would accelerate the elimination of the allele from the population. B. Inbreeding favors homozygotes. If a homozygote has a lower Darwinian fitness, inbreeding would accelerate the prevalence of the allele in the population. If a homozygote has a higher fitness, inbreeding would accelerate the elimination of the allele from the population. C. Inbreeding never occurs in a natural population, therefore the fitness and allele frequencies would not be affected. D. None of these choices are correct.
About ____ percent of the human genome is
unique to each individual.
a. 0 b. 0.5 c. 1 d. 2 e. 5
Centromere
What will be an ideal response?
Rats
a. are carriers of human pathogens. b. spread bubonic plague via infected fleas. c. infest rice fields, significantly reducing the yield. d. cause billions of dollars of annual economic loss. e. do all of these.