Rebecca was scratched by her cat and noticed redness and several swollen lesions appeared at the site of infection. She became concerned as her headache, fever and pain persisted, and went to an urgent care center. The doctor examined Rebecca and detected several buboes at the site of infection. The doctor sent a blood sample to the laboratory. The blood test showed the presence of antibodies involved in fighting the infection. It was suspected the bacterium was a parasitic obligate aerobic, rod of class Alphaproteobacteria. Gram stain showed pink bacilli and acid fast stain showed blue bacilli. Her infection was most likely acquired from a contaminated rat flea that contaminated her cat. The doctor prescribed azithromycin to Rebecca for her infection. What is the cause of the zoonotic infection

Which of the following scenarios is an example of the bottleneck effect? answers a in south africa, much of the afrikaner population is descended from a small number of dutch colonists. in this population, this is an unusually high frequency of pseudoxanthoma elasticum (pxe), an elastic tissue disorder. b four white-tailed deer are introduced to a park in finland. thirty years after their introduction scientists compare the genes in the population and find that there is no variation. c during the industrial revolution, london's air became filled with soot. as a result, birds started eating more of the lighter moths because they were easier to spot than their darker counterparts. over time, the moth population changed so that there were more darker moths than lighter ones. d 10% of the population of american alligators in an area have the recessive trait albinism. a massive flood results in the death of 80% of the population. of the remaining population, 60% have the recessive trait of albinism.

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

Many farmers prefer cattle without horns because it is safer for their herds. the allele for no horns (n) is dominant to the allele for the presence of horns (n). a farmer mates a male with horns to a heterozygous female without horns. what is the chance that the offspring will have horns?