#Question id: 31079
#Unit 4. Cell Communication and Cell Signaling
#Question id: 3397
#Unit 11. Evolution and Behavior
In a large natural population of Mimulus guttatus, one leaf was sampled from each of a large number of plants. The leaves were crushed and subjected to gel electrophoresis. The gel was then stained for a specific enzyme, X. Six different banding patterns were observed, as shown in the accompanying diagram.
Which one of the following conclusions is most appropriate based on the above observations?
A) There are three alleles of one locus and that the individuals with two bands are heterozygotes.
B) There are two alleles of one locus and that the individuals with two bands are heterozygotes
C) Population is present as hardy-Weinberg equilibrium
D) Population is not present as hardy-Weinberg equilibrium
#Question id: 5298
#Unit 8. Inheritance Biology
Four E. coli strains of genotype a+ b− are labeled 1, 2, 3, and 4. Four strains of genotype a− b+ are labeled 5, 6, 7, and 8. The two genotypes are mixed in all possible combinations and (after incubation) are plated to determine the frequency of a+ b+ recombinants. The following results are obtained, where M = many recombinants, L = low numbers of recombinants, and 0 = no recombinants. On the basis of these results, assign a sex type (either Hfr, F+, or F−) to each strain
#Question id: 1169
#Unit 4. Cell Communication and Cell Signaling
A loss-of-function mutation in which of the following would inhibit TGFβ signaling?
#Question id: 8713
#Unit 9. Diversity of Life Forms
Which statement represents the best explanation for the observation that the nuclear DNA of wolves and domestic dogs has a very high degree of sequence homology? Dogs and wolves ________.