Which is the true statement about natural selection? 1. natural selection can cause some traits to become less frequent in a 2. population over generations 3.all the statements are correct 4.natural selection can cause new versions of a trait to appear 5.natural selection causes random changes in trait frequencies in a population

Which is the true statement about natural selection? 1. natural selection can cause some traits to become less frequent in a 2. population over generations 3.all the statements are correct 4.natural selection can cause new versions of a trait to appear 5.natural selection causes random changes in trait frequencies in a population

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter19: The Evolution Of Populations

Section: Chapter Questions

Problem 5RQ: Population genetics is the study of: how selective forces change the allele frequencies in a...

See similar textbooks

Similar questions

1. Why do you think it is necessary for there to be variation in a population in order for evolution by natural selection to occur? 2. Why is it necessary for traits to be inherited for evolution to take place? 3. If a population is already well adapted to its environment, will most mutations be helpful or harmful? Explain.
The process of natural selection can be described as Group of answer choices 1. an organism changing during its life to be better suited for its environment 2. a cell dividing 3. traits that cause individuals to live longer or reproduce more are seen more often in the next generation 4. none of the above
1. What happened to observed allele frequencies in each population? (only answer this question number 1, below is a data) Data: a. observed frequency of alleles of F1 population without natural selection: A=0.43 a=0.57 b.observed frequency of alleles of F2 population without natural selection: A=0.52 a=0.48 c. observed frequency of alleles of F1 population with natural selection: A=0.69 a=0.31 d. observed frequency of alleles of F2 population with natural selection: A=0.62 a=0.38
1. THE PROCESS BY WHICH ORGANISMS CHANGE OVER TIME IS KNOWN AS 2. THE PROCESS WHEREBY ORGANISMS THAT ARE BETTER ADAPTED TO THEIR ENVIRONMENT TEND TO SURVIVE AND PRODUCE MORE OFFSPRING IS KNOWN AS 3. WHO DEVELOPED THE THEORY OF USE AND DISUSE? 4. WHICH THEORISTS SUGGESTED THAT ORGANISMS CAN "ACQUIRE" THE TRAITS NEEDED TO SURVIVE DURING A LIFE TIME? 5. WHICH THEORISTS SUGGESTED THAT ORGANISMS WITH BETTER TRAITS CAN SURVIVE AND REPRODUCE TO PASS THOSE FAVORABLE TRAITS TO THEIR OFFSPRING? 6. GENETIC VARIATION WAS A MAJOR FACTOR IN WHOSE THEORY? 7. "SURVIVAL OF THE FITTEST" WAS COINED BY WHO?
1. Definitions of phenotype, genotype, allele, gene, microevolution, macroevolution 2. Know that in humans, most of the genetic variation is observed within populations, and know why that is. 3. Know the 4 processes of evolution (3 neutral + natural selection) 4. Know that evolution isn't progressive and doesn't necessarily lead to more complexity 5. Know that evolution can lead to traits that decrease survival (ex: sexual selection)
Choose the correct answer. 4. Which of the following is NOT part of Darwin’s theory of natural selection? A. Suitable variations in a population tend to be passed on while unsuitable B. Individuals with variations suitable to their environment have shorter lifespans and produce fewer offspring. C. Variations in a population exist and those variations are inherited D. Living things tend to produce more offspring than can survive 5. Individuals in a population that have a variation which gives them an advantage in their environment are more likely to ___. A. Survive and reproduce B. Move to a different environment C. die and not reproduce D. change their characteristics to fit the environment
1. How do we measure and define evolution? 2. Evolution occurs: 1. at the level of the individual. 2. in traits. 3. in a single generation. 4. only at the phenotypic level. 3. The only source of entirely new genetic material is: 1. natural selection. 2. mutation. 3. recombination. 4. genetic drift. 4. Which of the following is not a key component of natural selection? 1. Traits for strength and vitality are favored over other traits. 2. Random variation exists for every trait in a population. 3. There will always be competition for resources. 4. Those with advantageous traits will outreproduce others. 5. The founder effect is a specific type of: 1. gene flow. 2. meiosis. 3. genetic drift. 4. mutation. 6. When a substantial amount of genetic variation is lost, we call it a: 1. genetic die-off. 2. gene flow. 3. genetic bottleneck. 4. gene dam. 7. When two previously isolated populations begin interbreeding and exchanging genes, we call it: 1. genetic drift. 2. founder effect. 3. incest.…
What is the main factor that differentiates genetic drift from natural selection? 1. Genetic drift occurs due to human influence, while natural selection is natural. 2. Genetic drift is random, while natural selection is based on advantageous traits. 3. Genetic drift is a mechanism of evolution, while natural selection is not.
1.) 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.
1. The diagram shows the population curve (y-axis) vs time (x-axis). Which line/curve best describes the theory of natural selection of Charles Darwin? 2. The diagram shows the population curve (y-axis) vs time (x-axis). Which curve represents the scenario described by Thomas Malthus "the populations with unlimited natural resources grow very rapidly, after which population growth decreases as resources become depleted". 3. The diagram shows the population curve (y-axis) vs time (x-axis). Which curve best represents the growth of bacteria? 4. The diagram shows the population curve (y-axis) vs time (x-axis). Which line/curve acts as a moderating force in the growth rate by slowing it when resources become limited and stopping growth once it has been reached.
1. Which among the following is NOT a principle of natural selection? a. The genes produced are a combination of the surviving and less favorable species b. The characteristics of organisms are inherited or passed from parent to offspring. c. Offspring vary among each other about their characteristics, and those variations are inherited d.More offspring are produced than can survive 2. Which of the following information is FALSE about the development of evolutionary thought? a. In his essay on the Principle of Population, Thomas Malthus predicts that the human population will grow faster than space and food supplies needed to sustain it. b. Charles Darwin set sail on the HMS. Beagle, a voyage that would provide him with evidence that leads to his theory of evolution. c. In the second and final volume of Principles of Geology, Alfred Wallace explained that processes occurring now had shaped Earth's geological features over a long time. d.…
1. Wood duck is one of the most recognizable birds in the United States. In the late winter season, the males attract the females with their call and colorful markings. The female wood ducks chose their partner based on their attractiveness. They then pair up and begin breeding in the early spring. What mechanism of evolution is described in the given situation? a. natural selection b. genetic drift c. non-random mating d. genetic flow 2. Which of these factors DO NOT produce an adaptive evolutionary change in a given environment? a. natural selection b. none of them c. mutation d. genetic drift