Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Do you think the human race is continuing to evolve in a Darwinian, genetic sense? Are the genes of our species changing? Do not just write "yes" or "no," but explain why you think so. In addition, include in your explanation of how the mechanisms of evolution, such as natural selection, would be at play.
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- Write short paragraphs explaining each of the following statements:(a) Natural selection chooses from among the individuals in a populationthose most suited to current environmental conditions. It does not guarantee survival under future conditions.(b) Individuals do not evolve, but populations do.(c) The organisms that exist today do so because their ancestors had traits that allowed them and their offspring to thrive.(d) At the molecular level, evolution can take place by the replacement of one nucleotide by another.(e) Evolution is said to have occurred within a population when measurable genetic changes are detected.arrow_forwardresults in condensed chromatin, which makes DNA inaccessible, and results in open chromatin, which makes DNA accessible. Oxidation; Nitrification OAcetylation; methylation O Methylation; acetylation O Nitrification; oxidationarrow_forwardPlease answer the question below; specifically "what are the four observations that inexorably led to the conclusion that species evolve by natural selection?" Thank you so much.arrow_forward
- Natural selection is dependent on several factors, including the ability a population to survive and reproduce within a particular environment. How are both of these factors modeled?arrow_forward"evolution is an integrated process" and uses sickle-cell allele as an example. In just 2-3 sentences, trace the various factors that influence evolution based on this example. I just want to know how Darwin, Mendel, gene flow, genetic drift, mutation, recombination and even the environment serve to create evolution. Thank you.arrow_forwardUsie the following textbook link to answer the question: (https://pressbooks.calstate.edu/explorationsbioanth2/chapter/2/) 1) In one paragraph, explain in your opinion, Why do you think the Theory of Evolution is so controversial? 2) In one paragraph, explain in your opinion, discuss your own ideas and also those presented in the 3 trials discussed in the textbook reading linkarrow_forward
- Explain: "Mutation is random;natural selection is the very opposite of random"arrow_forwardConsider the four postulates of natural selection. How have humans manipulated each of these postulates in natural or artificial systems?arrow_forwardConsider the trait in Figure 22.5a. Which statement about this trait is correct? Please choose the best option. a) In humans, the trait cannot be explained by the theory of evolution by natural selection. b. In humans, the trait improves the biological fitness of individuals. c. In humans, the trait is similar to a functional version of the trait in closely related species. d. Humans lack vestigial traitsarrow_forward
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