Which scenario is the least likely to be supported by the theory of .pdf

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Which scenario is the least likely to be supported by the theory of evolution?a. All species that have ever lived are genetically related.b. Pigs, dolphins, bats, and humans share a common ancestor.c. Humans evolved from chimpanzees.d. Dogs were domesticated from their gray wolf ancestor.e. Repeated exposure to DDT can lead to pesticide resistance in mosquitos. Solution c. Humans evolved from chimpanzees . This is because genetic evidence suggests that though humans and chimps are closely related, chimps do not represent our ancestors and both the groups have diverged about 4.4 m.y ago but have a common ancestor. Recent evidence suggests that the fossil Ardipithecus ramidus (4.4 m Y)may have been our common ancestor but walked neither like chimps nor like humans and had intermediate form of walking..

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00:00 00:33 Hybridization, as related to genomics, is the process in which two complementary single-stranded DNA and/or RNA molecules bond together to form a double-stranded molecule. The bonding is dependent on the appropriate base-pairing across the two single-stranded molecules. Hybridization is an important process in various research and clinical laboratory techniques. Hybridization. DNA is usually found as a double-stranded molecule. The two strands bind to one another in a complementary fashion by a process called hybridization. Naturally, when DNA is replicated, the new strand hybridizes to the old strand. In the laboratory, we can make small pieces of DNA, designed to screen for the presence or absence of certain DNA or RNA molecules in the cell. It also plays an important role in a procedure called polymerase chain reaction, known as PCR, where we amplify specific regions of the gene, and this is used in clinical testing.

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From Figure 26 what is true of Dryopithecus and Ouranopithecus? 1.) They were great apes. 2.) They shared a common ancestor more recently with the orangutans than with the other great apes. 3.) They appear to be part of a polytomy. 4.) Their closest common ancestor with all of the extant great apes is the one they share with the orangutans. 5.) They were about as different from each other genetically as humans are different from chimps. A. 1, 2, and 4 B. 1, 3, and 4 C. 1, 2, 3, and 4 D. 2, 3, 4, and 5 Which of these can be properly inferred from the phylogeny in Figure 26-5? A. Chimps and humans evolved from gorillas. B. The lesser apes are genetically more distinct from each other than the members of the great apes are each other. C. Orangutans have existed for about 14 million years. D. Together, the lesser apes and great apes form a clade. Assuming chimps and gorillas are closest relatives to humans, removing humans from the great ape clade and placing them in a different clade has the effect of making the phylogenetic tree of the great apes A) polyphyletic. B) paraphyletic. C) monophyletic. D) aphyletic Solution they share 4.1 .they are not great apes.2 is definitely true, they share a common ancestor more recently with the orangutans than the other apes.3. We can see 2 branch of dryopithecus & ouranopothecus rising from same point. So they are a part of polytomy 4 is also true their closest common ancestor with all of the extant great apes is the one they share with orangutan. 5. Is true they are obviously genetically different as we see they are part of different branches. So , last option is right I.e. 2,3,4,5 are correct 5. It is clearly shown that orangutans existed for 14 million years. 6..

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