Which of the following is/are true of BOTH natural selection and genetic drift? 1. Promotes traits that increase survival of reproduction 2. Depends on genetic mutations as the source of variation 3. Can lead to evolutionary change
Ans. 2 and 3 are true for both natural selection and genetic drift.
Genetirc drift affect the genetic composition but iy is completely random so it dosent work to produce adaptions unlike natural selection.
Which of the following is/are true of BOTH natural selection and genetic drift? 1. Promotes traits...
We expect natural selection and genetic drift to both result in the fixation of alleles, which seems like it should reduce average heterozygocity in populations – there should be very little observed variation. However, we observe a tremendous amount of variation in populations. What can explain this observation?
Select the option that contains three evolutionary forces a) natural selection, genetic drift, gene flow b) somatic cells, chromosomes, natural selection c) non-random mating, genomes, variation d) proteins, genetic drift, alleles e) natural selection, DDT resistance, environment
are these correct
Stopping which of these evolutionary forces can lead to speciation? A. genetic drift OB. gene flow OC. natural selection OD. sexual selection O E. mutations QUESTION 2 Speciation is most commonly a result of A. copatry OB. antipatry OC. allopatry OD. sympatry O E. sexual selection
Which of the following statements about genetic drift as an evolutionary factor is true? a. It is more potent in a population with small numbers than in a population with large numbers. b. It is responsible for the selection of mutations. c. It is connected to the movements of alleles between populations of a single species. d. Its strength is proportional to the size of a population: the larger the population, the greater the force. e. Both a and b
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...
13. Which of the following is the only evolutionary process that consistently produces adaptation? a. Genetic drift b. Natural selection c. Gene flow d. Mutations 14. Which of the following is NOT a possible result when isolated populations come into contact? a. Dispersal b. Stability c. Reinforcement d. Fusion e. New Species 15. What is greater than mutations in producing variation in diploids? a, transformation b. sexual recombination c. natural selection d. punctuated equilibrium e. conjugation 16. Which type of...
5. Using the following evolutionary concepts (speciation, macroevolution, microevolution, gene flow,genetic drift, and natural selection), represent your idea of how these evolutionary concepts are related to another. Use lines to connect and show the relationship between concepts. Write a word or short phrase by each line to specify the relationship between cocnepts.
HELP ASAP!! Based on the video and what you know about natural selection, which of the following must be true if evolution is the explanation for what the Grants have observed over time on Daphne? Select all that apply. Beak depth and length must be heritable. Beak depth and length must affect survival and/or reproduction of birds. The beaks of individual birds can change depending on what food is available. Over time, individuals can evolve to better fit the environment...
1. Genetic drift is an important mechanism for maintaining genetic variation in populations. True False 2. According to several studies (e.g., bacteriophage f1), most mutation are _______. A. lethal B. deleterious but not lethal C. approximately neutral D. beneficial 3. Most mutations occur in response to the adaptive needs of the organism. True False Can please answer all 3 questions ASAP. Thank you in advance!
1. Natural selection favors behaviors that enhance: a. survival and reproduction. b. body size. c. population size. 2. Behavioral traits are a. less genetic than morphological traits. b. more canalized than morphological traits. c. less canalized than morphological traits 3. Evolutionary psychologists argue specifically that human brains are designed to solve problems involving a. living things. b. reciprocal altruism between people. c. science and technology. 4. Large brains may have initially evolved in monkeys and apes because they a. are more...