4. (5:17) Which of the following correctly describes a principle of natural selection? A. Variation in phenotype is what distinguishes one species from another. B. Individual members of a species are only able to pass down favorable traits. C. Populations produce more offspring than the environment can support. D. Only individuals that don't have unfavorable traits are able to reproduce. 5. (5:59) Which of the following is key to Darwin's theory? A. Individuals evolve over their lifetime as their environments change. 3. Species evolve over generations as certain individuals reproduce. C. Humans evolve over their lifetime while animals evolve over generations. 5. (10:13) In your own words, explain the difference between directional selection, stabilizing selection, and disruptive selection. 7. (11:24) In your own words, explain how sexual selection also contributes to evolution. 8. (12:21) What is one question you still have about natural selection?

Which of the following best describes natural selection? O It is a guess made by scientists about how life develops, but it has no hard evidence to support it. It is the idea that the strong survive and the weak die off. It is the idea that organisms with genetic traits that improve their ability to reproduce are more likely to pass those traits on to future generations. It is the idea that organisms naturally increase in complexity and intelligence with time.

What is true about evolution by natural selection? a. It is a largely random process. b. Homology shows that convergence is a useful tool for deducing adaptive function. c. Mothers are invariably members of the same species as their offspring, so selection can never create new species. d. Harmful recessive genes are eliminated more rapidly than harmful dominant genes. e. None of the above is true.

What is the difference between evolution, natural selection, and artificial selection? A. Evolution is a genetic change in a population over time which can occur through natural selection. Artificial selection is the differential reproduction of individuals in a population to promote the characteristics chosen by the breeder.   B. Natural selection is the change of allele frequencies in a population over time.  Evolution leads to differential survival and reproduction of individuals. Artificial selection has produced domesticated animals and plants.   C. Evolution is a mechanism of artificial selection.  Natural selection is a form of artificial selection in which nature selects the characteristics that are most beneficial to a species.   D. Artificial selection is a mechanism of evolution and is the main process of domesticating animals and plants for human use.  Natural selection is the same as evolution.

Natural selection can act on both ________, which is the probability of survival, and ________, which is the number of offspring produced. a: epistasis; epigenetics b: directional selection, frequency dependent selection c: livelihood; income d: viability; fecundity

according to darwin,natural selection occurs because-

Lamarck's theory of inheritance of acquired characteristics did NOT include which of the following ideas? Select one: a. The environment plays a role in selecting favourable characteristics b. Physical characteristics acquired during a lifetime can not be passed to offspring c. Organisms can change during their own lifetime d. Physical activities can change organisms O O O

Natural selection operates on populations over many generations. Which of the following allows natural selection to occur?    A.  the desire and the advantage of a population to remain constant  B.  the old age of the individuals which causes them to die  C.  the abilty for populations to change quickly from one trait to the next  D.  the unequal ability of individuals to survive and reproduce

1.) Which questions by a student would lead to a better understanding of the difference between the theories of Darwin and Lamarck? Which scientist's theory came first? Which scientist’s theory requires genetic diversity? Which scientist’s theory involves the inheritance of useful traits? Which scientist’s theory involves change in organisms over time?   Explain your choice.  Darwin’s Theory of Natural Selection states that there is a struggle to survive as organisms compete for resources and try to avoid predation. Over time, the organisms best adapted will survive and pass their traits on to offspring.  Which of the following is the best explanation of the role mutations play in natural selection?    Mutations provide variation within a population and environmental pressures select for or against these adaptations. Mutations are always harmful and organisms with mutations will be selected against, leaving those that are best adapted to pass their traits on to offspring.…