Which of the following are intrinsic explanations for the diversity we see in animals? (select all that apply)

Which of the following is true of natural selection but not true of genetic drift? 

A group of 35 sunfish from an initial population of roughly 6,500 sunfish move to a different region where they are entirely reproductively isolated from the original population. They are the only sunfish in the region to which they moved. In the population of 6,500 the three alleles for coloration are present in roughly equal proportions but only two of the alleles for coloration remain in the population of 35 after they’ve moved. Which of the following most accurately describes this scenario?

Use the following information for the next two questions. Dr. Samwise is studying a species of ground pheasants that live around an extremely large ravine to determine if parapatric speciation has occurred. The pheasant species, Lophura diardi, is divided into seven subspecies based on morphology and the location of each subspecies around the ravine is plotted on the figure. Based on morphological observations, Dr. Samwise hypothesizes that an ancestral population similar to the Scathii subspecies originated on the eastern side of the ravine. Then, groups moved along the northern and southern sides of the ravine until the northern, and southern groups met again on the western side of the ravine. Dr. Samwise constructs a phylogeny of the subspecies using DNA data. Which of the phylogenies below support Dr. Samwise’s hypothesis based on morphological data?

Which of the following are intrinsic explanations for the diversification seen in the Cambrian explosion? (select all that apply)  

The invertebrate class of fish are the exoskeletons and divided into two categories of cephalopods and mollusks.   

Which type of sterilization is most commonly used for heat-sensitive items in a healthcare facility?

What is a primary consideration when handling flexible endoscopes during cleaning?

Who was the first European explorer to arrive in Florida?

Which disinfectant is known for its tuberculocidal and virucidal properties, but evaporates very quickly?