Homework Answers
The option c- selection pressure is correct. It is widely accepted fact that natural selection or selection pressure is the main driving force that makes changes among organisms. These changes are acceptable and capable to transfer through generations. Actually, natural selection selects only those organisms that can survive in the particular situation. Other organisms should die.
Another phenomenon mutation also applies but it has 10-6 slower rate than natural selection. However, this rate varies among species but that is the minimum rate of change. Therefore, it is not consider as main driving force of the evolution.
Therefore, only option c is correct.
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8. Evolution is driven by a. random mutation. c. selection pressure. d. selection pressure applied to...
Evolution with retention of function occurs when: A) orthologs acquire a single mutation outside of critical...
Evolution with retention of function occurs when: A) orthologs acquire a single mutation outside of critical domains B) paralogs acquire a single mutation outside of critical domains C) the core of the protein is minimally changed D) none of the above E) all of the above
Evolution with retention of function occurs when: A) orthologs acquire a single mutation outside of critical domains B) paralogs acquire a single mutation outside of critical domains C) the core of the protein is...
Of the following evolutionary forces; crossing over, directional selection, mutation, speciation, stabilizing selection, sex, gene flow...
Of the following evolutionary forces; crossing over, directional selection, mutation, speciation, stabilizing selection, sex, gene flow and genetic drift which promote or maintain genetic variation within a population? a) crossing over only b) directional selection and sex c) directional selection, mutation, and speciation d) crossing over, mutation, sex, and gene flow e) only sex Of the following evolutionary forces, crossing over, directional selection, mutation, speciation, stabilizing selection, sex, gene flow and genetic drift which promote genetic differentiation (divergence) among populations?...
6. Which of these conditions will lead to evolution by natural selection? a. Heavy metal pollution...
6. Which of these conditions will lead to evolution by natural selection? a. Heavy metal pollution reduces reproductive success of all phenotypes of green algae in the pond. b. Variation among individuals is not genetic; instead it results from learned behavior or physiological environmental responses. c. Introduction of an exotic predator species results in one native prey phenotype evading predation while other phenotypes get eaten. d. Individuals of the population are clones (genetically identical). 7. Which one is used as...
a. Explain the statement “When environmental conditions reverse, so does the selection pressure”. b. Describe two...
a. Explain the statement “When environmental conditions reverse, so does the selection pressure”. b. Describe two examples of artificial selection in detail. c. How do the fossils help us study evolution? Give two examples.
D. Natural selection acts on the classes of antibiotics and the individual antibiotics evolve. T 8....
D. Natural selection acts on the classes of antibiotics and the individual antibiotics evolve. T 8. How do bacteria that have never been treated by antibiotics acquire genes for antibiotic resistance? (1 pt) These bacteria are naturally resistant to all antibiotics. II. During conjugation, two bacterial cells form a bridge between them and exchange genetic information. This can transfer resistant genes from one cell to another (also known as horizontal gene transfer, plasmid exchange). Bacteria chose to join resistant populations...
help 4.) Darwin's Theory of Natural Selection stated that: a.) At one time the earth held...
help
4.) Darwin's Theory of Natural Selection stated that: a.) At one time the earth held all the species and each catastrophic event would destroy certain species - survivors would repopulate the world b.) Environmental pressures and internal needs bring about changes in body form and function and this is passed on to their offspring c.) Process in which individuals with favorable inherited traits are more likely to survive and reproduce at a higher rate than other individuals 5.) Convergent...
What common outcome of evolution by natural selection poses problems for people trying to use the...
What common outcome of evolution by natural selection poses problems for people trying to use the cladistic method to classify organisms? Select one: a. genetic drift b. low heritability c. convergence d. polygenic traits e. none of the above
16. Which is a true statement regarding and vaccines? a) Antice can any type of microbe...
16. Which is a true statement regarding and vaccines? a) Antice can any type of microbe b) Microbes cannot becomesitant to antibiotics c) Vaccines only a certain types of microbes d) Vaccines don't microbes instead they boost the immune system e) None of the above /F13 17. Which of the following best describes a species? a) a group of identical organisms b) a group of organisms that can successfully reproduce c) two related groups of organisms d) all organisms that...
Evolution by Natural Selection can be described as: A) individuals with traits that increase survival will...
Evolution by Natural Selection can be described as: A) individuals with traits that increase survival will become more common, even if they don't reproduce B) individuals with genes that allow them to sacrifice themselves for the species are the more evolved C) Species evolve as a whole with all individuals within the population evolving at the same time D) Individuals with traits that increase survival and produce more offspring as a result, their genes become more common in the population
Natural selection can move a population beyond its initial range of variation because a. sudden increases...
Natural selection can move a population beyond its initial range of variation because a. sudden increases in mutation rates are often induced by selection. b. under genetic drift there is less variation and under selection there is more. c. selection can expose hidden variation. d. selection usually increases the randomness of mating, thus increasing variation. Which of the following is true of continuously varying characters? a. They allow for blending of the effects of two genes, the blended version passed...
Evolution with retention of function occurs when: A) orthologs acquire a single mutation outside of critical domains B) paralogs acquire a single mutation outside of critical domains C) the core of the protein is minimally changed D) none of the above E) all of the above
Evolution with retention of function occurs when: A) orthologs acquire a single mutation outside of critical domains B) paralogs acquire a single mutation outside of critical domains C) the core of the protein is...
6. Which of these conditions will lead to evolution by natural selection? a. Heavy metal pollution reduces reproductive success of all phenotypes of green algae in the pond. b. Variation among individuals is not genetic; instead it results from learned behavior or physiological environmental responses. c. Introduction of an exotic predator species results in one native prey phenotype evading predation while other phenotypes get eaten. d. Individuals of the population are clones (genetically identical). 7. Which one is used as...
D. Natural selection acts on the classes of antibiotics and the individual antibiotics evolve. T 8. How do bacteria that have never been treated by antibiotics acquire genes for antibiotic resistance? (1 pt) These bacteria are naturally resistant to all antibiotics. II. During conjugation, two bacterial cells form a bridge between them and exchange genetic information. This can transfer resistant genes from one cell to another (also known as horizontal gene transfer, plasmid exchange). Bacteria chose to join resistant populations...
help
4.) Darwin's Theory of Natural Selection stated that: a.) At one time the earth held all the species and each catastrophic event would destroy certain species - survivors would repopulate the world b.) Environmental pressures and internal needs bring about changes in body form and function and this is passed on to their offspring c.) Process in which individuals with favorable inherited traits are more likely to survive and reproduce at a higher rate than other individuals 5.) Convergent...
16. Which is a true statement regarding and vaccines? a) Antice can any type of microbe b) Microbes cannot becomesitant to antibiotics c) Vaccines only a certain types of microbes d) Vaccines don't microbes instead they boost the immune system e) None of the above /F13 17. Which of the following best describes a species? a) a group of identical organisms b) a group of organisms that can successfully reproduce c) two related groups of organisms d) all organisms that...
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