III. An original population of finches on Daphne Island is polymorphic when it comes to beak sizes. (this population feeds on seeds of varying sizes from different species of plants). At first the beak size variations and their main food source were as follows: Small beak/small seeds 25% Medium beak/medium seeds 50% Large beak / large 25% a. Draw a graph of the original population and their beak size/percentage. (Assume this is the original population with plenty of food sources for each). b. A 10-year drought hit the island which kills the plants that produce both the small seeds and the medium size seeds. Describe the allele frequency shift and draw a graph to show the difference in the beak sizes at the end of the ten years. Draw a graph representing your hypothesis. c. What type of selection would this be?

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Based on the data below, which of the following statements best describes an effect of population density on mice populations: Number of Ave. Ave. Ratio of mice percent of number of male: successful mice per female breeding litter 50 60% 7.2 1:2 148 58% 6.8 1:2 374 57% 6.6 1:2 1700 39% 5.2 1:2 a. Successful breeding decrease as population density decreases. b. the female to male ratio increases a population density decreases O c. Successful breeding decrease as population density increases d. Birthrate decreases as population density increases

A.) What influence did human density (Panel A), crow density (B), and avian species diversity (D) have on the probability of crow decline in aregion? B.) From a co-evolutionary perspective, why did the likelihood of crow population declines decrease as WNV spread westward after its introduction in 1999 (see Panel C above)?

High values for heterozygosity (or expected heterozygosity) at a genetic locus in a population indicates that there is:   a. A lot of genetic variation   b. Little genetic variation   c. A population not under HW equilibrium   d. A large amount of homozygosity

Whale Body Shape Phenotypes in Decreasing water Temperature: Population after selection Original population Small Body- -Large Body 1.) Which statement from a scientist would best explain why the whale species changed? a. Whale body size increased since colder waters meant whales no longer needed as high of a surface area to volume, the ability to remain in colder water lead to reproductive isolation from the whales that immigrated to warmer waters. b. Whale body size increased since colder waters meant whales no longer needed as low of a surface area to volume. the ability to remain in colder water lead to reproductive isolation from the whales that immigrated to warmer waters. c. Whale body size decreased since colder waters meant whales no longer needed as high of a surface area to volume, the ability to remain in colder water lead to reproductive isolation from the whales that immigrated to warmer waters. d. Whale body size decreased since colder waters meant whales no longer…

10) The following figure describes results from an experiment in which brood size in breeding European kestrels was manipulated. Which of the following statements are supported by these results? Flight (hours/day) Adult survival rate (%) 007 CO 10 3 cu 1 0 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 T 1 Female Question 10 options: • Male 2 3 4 5 6 Brood size (number of chicks) 1 7 Survival of adult males decreased with increasing brood size. Females spent more time foraging (measured as hours spent daily in flight) than did males. Brood size decreased with date (i.e., late season broods were smaller than early season broods).

About 70 percent of all Caucasians can taste the chemical phenylthiocarbamide, and the remainder cannot. The ability to taste this chemical is determined by the dominant allele T, and the inability to taste is determined by the recessive allele t. If the population is assumed to be in Hardy-Weinberg equilibrium, what is the heterozygotes frequency in this population? a. 0.7 b. 0.4 c. 0.2 d. 0.5

1. The image shows a model of a reproductive strategy of an 2. The bird in the picture feeds on mice. A major forest fire resulted in a layer of ash that darkened the soil on which the mice lived. The illustration shows the distribution of mice over time. organism. What type of reproduetive strategy is shown in the model Make a claim about why the color distribution in the mouse population changed over time. Provide evidence to support and what is an evolutionary disadvantage of it? your claim. 1 2 3 Number of Weeks after the Forest Fire

Match the description with the correct term. the idea that different mating calls of birds used during mating season has led to different species of birds two populations become reproductively isolated (can no longer reproduce successfully) a common ancestor diversifies and the various species all have different adaptations organisms that have a common ancestry but develop body parts that perform different functions  the idea that inherent variation in a population allows for certain traits to be selected for and carried on to future generations of the population experiencing an environmental pressure a model suggesting the gradual change of a species in a linear fashion to form distinct species 1.biological barrier to reproduction 2.theory of natural selection 3. adaptive radiation 4. homologous structures 5. speciation 6. gradualism