Concept explainers
To determine: Whether the human species is still evolving or shielded from natural selection or not.
Introduction: The phenomenon of natural selection is based on the evolutionary changes that occur within the population. This evolutionary change helps an organism to adapt better to its surroundings or environment. Natural selection brings about evolutionary adaptation in the organisms.
To determine: Whether it is possible that misapplication of technology will end up exposing our species to more rather than less natural selection.
Introduction: The phenomenon of natural selection is based on the evolutionary changes that occur within the population. This evolutionary change helps an organism to adapt better to its surroundings or environment. Natural selection brings about evolutionary adaptation in the organisms.
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HUMAN HEREDITY (LL)-W/MINDTAP ACCESS
- Is gene transfer a form of eugenics? Is it advantageous to use gene transfer to eliminate some genetic disorders? Can this and other technology be used to influence the evolution of our species? Should there be guidelines for the use of genetic technology to control its application to human evolution? Who should create and enforce these guidelines?arrow_forwardThe concept of evolution has always been connected with some notion of progress–natural selection pushing populations toward better and better adaptations to create "perfect organisms." How would you argue that evolution does not craft perfect organisms?arrow_forwardBackground: In class we did a project about m and m’s and there ability to evolve and natural selection. (Yes I know they can’t actually evolve it was just used as a example in class) however I can’t figure out this question. Occasionally a mutant may occur and produce a candy that is misshapen or Pointier or flatter than the rest. Often this proves to be a weakness, but a rare mutation may confer extra M&M durability. Other mutations in M&Ms could occur ( like ones that result in a new color). A mutant un you population represents a new _________. What goes in the blankarrow_forward
- can you describe an example of natural selection? your example can be real or imaginary. just be sure to tell us whether it is true or not!arrow_forward1) “Nature is an extremely dangerous place to live.” Provide example in support of this assertion. 2) How is selective breeding similar and different from natural selection?arrow_forwardIn your group, consider the following statement: "Mutations are random, natural selection is not." What does that statement mean?arrow_forward
- How does artificial selection, natural selection, genetic drift, mutation and recombination beneficial to the different organisms?arrow_forward1.) Natural Selection: Of the three genotypes (AA, Aa, and aa), which of the three genotypes will be selected for under the current conditions? In other words, which of the three genotypes will increase in frequency? What if medical science were able to hold off the effects of AIDS for indefinite periods of time so that it became common for people with AIDS to live long enough and well enough to have children. What would this do to the frequency of the resistance allele and the incidence of AIDS? Support your answer. 2.) Even though anti-HIV drugs may prevent evolution towards resistance, can you justify not using anti-HIV drugs if they are available? Your response should consider scientific and ethical perspectives.arrow_forwardChoose an organism that is a product of artificial selection. Give a brief description of your organism and its desired traits. What wild ancestor did it come from? Was it produced with selective breeding or genetic engineering (i.e. genetically modified)? What are the benefits of artificial selection in this case? Are there potential negative consequences?arrow_forward
- Is natural selection random with respect to fitness? I know that genetic drift, gene flow and mutations are random with respect to fitness, but I wasn’t sure about natural selection. Thanks for your help.arrow_forwardConsider the four postulates of natural selection. How have humans manipulated each of these postulates in natural or artificial systems?arrow_forwardIdentifying genes like HMGA2 is important, because it is evidence of natural selection. How does it demonstrate that natural selection occurred in Darwin’s finches? Scientists mutate and modify the gene in the lab to see how changes might occur to the organism. Scientists identify different forms of the gene in individuals from the same species and observe how it shows up as a trait. Scientists study similar genes that also impact the same traits to see how they work together and influence one another. Scientists observe the frequency of the different forms of the gene and how it changes in response to the environment. Need some help on this one.arrow_forward
- Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning