Some organisms have features that have different functions, but similar structures. One example is the forelimb of humans, dogs, birds, and whales. What term best describes the relationship between these structures? * Embryological Analogous Homologous no answer Vestigial
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- WRITE ABOUT A THEME: Organization You have seenmany examples of how form fits function at all levels of thebiological hierarchy. However, we can imagine forms thatwould function better than some forms actually found innature. For example, if the wings of a bird were not formedfrom its forelimbs, such a hypothetical bird could fly yet alsohold objects with its forelimbs. In a short essay (100–150words), use the concept of “evolution as tinkering” to explainwhy there are limits to the functionality of forms in nature.The video game “Spore” invites players to design creatures and guidethem through “five stages of evolution.” Search the Internet forinformation about “Spore”; describe how evolution in this game issimilar to, and different from, the evolution of life on Earth.The theory of evolution was controversial when it was first proposed in 1859, yet within 20 years virtually every working biologist had accepted evolution as the explanation for the diversity of life. Explain in at least 50 words why.
- Evolution is based on which of the following concepts? (a) organisms share a common origin (b) over time, organisms have diverged from a common ancestor (c) an animals body parts can change over its lifetime, and these acquired changes are passed to the next generation (d) a and b (e) a, b, and cYou have now studied three different types of anatomical structures. Homologous structures show individual variations on a common anatomical theme. These are seen in organisms that are closely related. 1. Give an example of a homologous structure from this activity: Analogous structures have very different anatomies but similar functions. These are seen in organismsthat are not necessarily closely related but live in similar environments and have similar adaptations. 2. Give an example of an analogous structure from this activity: Vestigial structures are anatomical remnants that were important in the organism's ancestors but are nolonger used in the same way. 3. Give an example of a vestigial structure from this activity:The theory of evolution is supported by a large body of evidence. What is the first occurrence of found in geologic strata?
- Which of the following is NOT true about creationism? * no answer There is no extinction of organisms because organisms can always survive as long as they try hard enough. The earth was created only 6000 years ago because the evidence of the rocks suppor that idea. Any great change is due to small but cumulative changes that occur over long periods of time. All organisms are perfect because they are created to be able to survive in their habitat.Which of the following illustrates the unity observed in organisms with a common ancestor? Flamingos and penguins are different colors. The gene for the human hormone insulin can be inserted into bacteria, and the resulting bacteria can use the gene to produce functional insulin. A robin can fly, but a penguin cannot. Fungi tend to absorb nutrients from other organisms, while animals consume their food. O Living organisms span a range of sizes.Scientists compare fossils of extinct organisms to modern organisms. Fossils show that: O Modern organisms and extinct organisms are not related O Extinct organisms have homologous structures with modern organisms O modern organisms have not changed from their ancestors O all of the above
- Why do scientists consider vestigial structures (like a human appendix) evidence for evolution?The theory of evolution has long been a part of the study of biology in its attempt to explain the diversity of different life forms. Why do you think has it not been elevated as a Law?The smallest unit that evolution act upon is