After the mass extinction that occurred 65 million years ago, mammals rapidly diversified to occupy habitats that were previously unavailable to them. What concept does this illustrate? A. Adaptive radiation B. Cretaceous selection C. Reproductive isolation D. Heterozygote advantage

Which of the following is NOT true for the speciation of finches in the Galapagos islands? A. Natural selection acted on beak shape, and resulted in different beak morphologies for different food sources. B. Assortative mating reinforced existing divergence between birds. C. Speciation of finches started by birds starting to specialize on different food sources. D. Speciation of finches on the same island is due to allopatric speciation.

Which of the following statement about the outcome of the evolution of a new species through hybridization is false? a.The new species may have traits that allow it to inhibit environments different from both parental species. b.The new species is always an intermediate of the two parental species c.The new species may have greater genetic diversity and greater trait diversity than the parental species. d.None of the above   What are the two ways of looking into evolution in detail? a.Micro frequency change and ascent with modification b.Genotypic and phenotypic modification c.DNA frequency change and inheritance modification d.Allele frequency change and descent with modification   Natural selection increases the frequencies of advantageous alleles and decreases deleterious alleles' frequencies. What are the three categories of natural selection depending on the favored traits? a.Directive, selective and native b.Indicative, normative and fixative c.Directional, stabilizing and…

The Multiregionalism model of modern human origins hypothesizes that____. a. some features of archaic Homo are preserved and visible in subsequent populations of modern humans b. the transition to modern humans occurred in the Old World and did not include interbreeding C. gene flow plays an important role in the origins of modern humans d. both a and b e. both a and c

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Which hypothesis is plausible for the extinction of the dodo bird? Select all answers that apply. A. The food and other resources they required became scarce due to climate change. B. An asteroid crashed into the region where the birds lived and only affected their survival and not the other animals that lived there. C. Cannibalism within the species caused the population to decline. D. Each bird dove into the water even though it could not swim, which led to mass drownings. U E. Predators, including humans, hunted and killed the population to a point that it could not recover. red MacBook Air 80 F3 F1 DO0 F4 F2 F5 F7 % & %24 23

According to " Denisovans: Decoding the Secrets of Our Mysterious Ancient Cousins”, what is the most likely reason that the Denisovans became extinct?    A.Homo sapiens expanded into the territories that Denisovans lived, and used up the food and land resources in that area. B.Woolly mammoths expanded into the territories that Denisovans lived, and used up the food and land resources in that area. C.Predators expanded into the territories that Denisovans lived, and they killed off the Denisovans. D.Homo sapiens expanded into the territories that Denisovans lived, and killed off the Denisovans.

Much research on extinction has focused on small populations, which are vulnerable for numerous reasons. A cyclical chain of events causing a small population to decline even further and become vulnerable to processes that lead to extinction is called an extinction vortex. Which of the following is not one of the factors leading to this phenomenon? A. Inbreeding between individuals in the population B. Little genetic variation in the population C. low tolerance to environmental stochasticity D. metapopulations with high connectivity E. low fitness of individuals within the population

Fossils that serve as transitional links allow scientists toa. determine how prehistoric animals interacted with each other.b. deduce the order in which various groups of animals arose.c. relate climate change to evolutionary trends.d. determine why evolutionary changes occur.

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