A GWAS tests for a strong association of genotype (using DNA markers) and phenotype in natural populations. Therefore, which of the following would be true of linkage disequilibrium?
A) There is a significant correlation between phenotype and genotype.
B) The P value is > 0.05.
C) The lod score is negative.
D) There is evidence of inbreeding.
E) There is a deviation from Hardy-Weinberg equilibrium.
A
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You are a detective on a sexual assault case and are presented with these DNA data. Who would you arrest for the crime?
1.The boyfriend.
2.Suspect 1.
3.Suspect 2.
4.There is still not enough information. I would arrest no one.
Which of the following is a major difference between prokaryotic cells and eukaryotic cells?
A) Prokaryotes have cells while eukaryotes do not. B) Eukaryotic cells have more intracellular organelles than prokaryotes. C) Prokaryotes are not able to carry out aerobic respiration, relying instead on anaerobic metabolism. D) Prokaryotes are generally larger than eukaryotes.
Which ecosystem makes up approximately 70% of the Earth's surface?
A) terrestrial; rainforest B) aquatic; coral reefs C) terrestrial; tundra D) aquatic; marine E) aquatic; fresh water
Water fleas, Daphnia magna, can switch between asexual and sexual reproduction cy-cles. Which of the following observations support(s) the hypothesis that sex is favored in unpredictable environments?
a. The introduction of predators triggers sexual reproduction. b. Daphnia reproduces asexually every other generation in a variety of habi-tats. c. Daphnia reproduces sexually when its aquatic habitat dries up. d. Asexual D. magna strains outcompete introduced competitors. e. A and C.