When studying the processes of speciation, we learned about situations when two closely related species can possibly reproduce, but have different courtship practice associated with mating, this is an example of ___ a. Mechanical isolation  b. Behavioral isolation  c. Temporal isolation d. Habitat isolation

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

9. Two lizard populations were found on opposite sides of a mountain. On a particular gene A, the following genotypes (together with the corresponding frequencies) were observed: AA Aa aa Population 1 38 Population 2 0 44 18 80 20 a. Calculate the frequencies of A and a in the two populations. а. b. Calculate and establish if either of the two populations appear to be at Hardy-Weinberg equilibrium. c. A huge flood opened a canyon in the mountain previously separating population 1 and 2. They were then able to migrate such that the two populations mixed completely and mated at random. Determine the genotype frequency of the next generation of the new combined population.

Several new tetraploid species of a plant called salsify (Tragopogon) have arisen in western North America. These new species each arose from a diploid species that went through the process of allopolyploidy. This mode of speciation is a type of ________ and it occurs ________.   A. allopatric speciation; almost instantaneously   B. sympatric speciation; gradually   C. allopatric speciation; very slowly   D. sympatric speciation; quickly

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32. What is a species? Group of answer choices a.Two populations that only interbreed very occasionally or rarely if at all. b.An interbreeding population. c.Two populations that never interbreed.

Sexual selection occurs whena. one sex has a higher fitness than the otherb. a species exhibits sexual dimorphismc. there is a male dominance hierarchy and only the alpha male reproduces. d. There is monogamous mating.e. A trait is favored by one sex such that individuals of the opposite sex possessing that trait have an increased likelihood of reproducing.