Alexey Kondrashov’s deleterious mutation hypothesis suggests that _____________ is selectively advantageous because it allows deleterious mutations to be dropped out of a population. 

Dominant and ____________ mutations which are beneficial to fitness take the least time to reach fixation within a population. (choose among the following answers)

Genetic bottlenecks and founder effect both…

The red queen hypothesis suggests that sexual reproduction has an advantage over asexual reproduction because the higher levels of variation produced are valuable when…

What reason is suggested by the Authors of the book as a reason why humans are one of the very few animals which has menopause?

Why is it that male seahorses are more picky about which females they mate with than males of most other animal species?

What bones of the ancestors of whales and the earliest whales indicate when they made the transition to a fully marine/aquatic habitat?

The evolution of the venomous bite known to be so common among venomous snakes represents…

The deposition of Eumelanin in human skin (and thus the light dark variation of human skin) generally trends to provide greater pigmentation closer to the equator (where there is more cancer causing Ultraviolet light) and less deposition at greater latitudes (where less UV light is provided by the sun). If humans variation in this factor is based upon the deposition of eumelanin providing a survival advantage in areas and not so much of an advantage in other areas, then we could say this variation across the habitat of humanity (the land of Earth) is an example of…

Dr. Bennett believes that a newly synthesized compound, Xylozine, may be effective in reducing the severity of symptoms in patients with seasonal allergies. Preliminary tests in the lab have shown that Xylozine can counteract the effects of certain allergens. Dr. Bennett’s clinic has a diverse group of patients with varying levels of seasonal allergy severity. He also has access to a placebo that is indistinguishable from Xylozine in appearance and taste. Given Dr. Bennett’s goal and the fact that he can supply patients with either Xylozine or a look-alike placebo, which study design would generate the cleanest evidence for the drug’s effectiveness? [1] Why is it essential that neither the participants nor the clinic staff know who receives Xylozine versus placebo in the study you design? [2] Imagine some participants begin taking over-the-counter antihistamines during the trial without telling the research team. According to the “dirty data” categories in the handout, which problem does this introduce? [3] If Dr. Bennett reviews the symptom diaries and pays more attention to participants who report improvement while overlooking those who do not, which “dirty data” category from the handout is most likely at play? [4]  Which specific feature of the proposed study is designed to protect the results from being distorted by the placebo effect? [5] After the study, a marketing brochure quotes two participants who claimed Xylozine “changed my life” and ignores the majority who reported little difference. Which dirty-data category best describes this selective storytelling? [6]