Explain well. Asap Which of the following is a good example of Natural Selection occurring in the humanpopulation?Select one:a. the ratio of males to femalesA mutation present in about 10% of European descendants that protects from HIV infectionOb.O c. the different alleles for eye color in humansO d. the presence of freckles on the face

Example of natural selection occuring in human population.

Which of the following is a good example of Natural Selection occurring in the human population? Select one: a. the ratio of males to females O b. A mutation present in about 10% of European descendants that protects from HIV infection O c. the different alleles for eye color in humans O d. the presence of freckles on the face

Which of the following is a good example of Natural Selection occurring in the human population? Select one: a. the ratio of males to females O b. A mutation present in about 10% of European descendants that protects from HIV infection O c. the different alleles for eye color in humans O d. the presence of freckles on the face

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter19: Evolutionary Change In Populations

Section: Chapter Questions

Problem 10TYU: Which of the following is not true of natural selection? (a) natural selection acts to preserve...

See similar textbooks

Similar questions

Scientists have concluded that the AS genotype as an adaptation for survival in Africa. Support the conclusion in terms of natural selection A. The frequency of the AS allele increases proportionately to the number of Africans in the population B. Because Malaria does not exist in the U.S and the AS allele does not provide any advantage to survival there. C. As the frequency of Malaria increases so does the frequency of the AS allele combination as it protects against getting Malaria D. Those without the AS genotype die out due to sickle cell disease; the populations left with a greater allelic frequency of the AS genotype
People who are heterozygous for the cystic fibrosis gene are morelikely than others to survive a cholera epidemic. This heterozygoteadvantage seems to explain why homozygotes are maintained in thehuman population, and is an example ofa. disruptive selection.b. balanced polymorphism.c. high mutation rate.d. nonrandom mating.
Imagine a population of pea plants growing in Petaluma. 100% of the gene pool is P alleles, for purple flowers. How can white alleles (p) enter this population? Select all the correct answers. O mutation gene flow O genetic drift O natural selection
A scientist's observation that finches of different species on Galapagos Islands have many similar physical characteristics supports the hypothesis that these finches: O A Descended from a common ancestor O B. Have the ability to interbreed C. Acquired traits through inheritance O D. All eat the same type of food
Which of the following is an example of stabilizing selection?a. Over time, Equus developed strength, intelligence, speed,and durable grinding teeth.b. British land snails mainly have two different phenotypes.c. Swiss starlings usually lay four or five eggs, therebyincreasing their chances of more offspring.d. Drug resistance increases with each generation; theresistant bacteria survive, and the nonresistant bacteriaget killed off.e. All of these are correct
You are studying sea turtle shell color variation in one species of sea turtle. Which of the following statements does NOT explain how one of the three conditions for natural selection is met for sea turtle shell color? A Shell color is a heritable trait. B Neither brown nor yellow shelled turtles can retract their heads into their shells. O c Sharks, the main predator of sea turtles, can more easily see brown sea turtles than yellow-green sea turtles. D The finely serrated jaws of the yellow-green sea turtles allow them to access sea grasses and algae more easily than brown sea turtles. O E Both yellow-green and brown sea turtles live in the same area of the Atlantic Ocean.
Which of the following is not true of natural selection? (a) natural selection acts to preserve favorable traits and eliminate unfavorable traits (b) the offspring of individuals that are better adapted to the environment will make up a larger proportion of the next generation (c) natural selection directs the course of evolution by preserving the traits acquired during an individuals lifetime (d) natural selection acts on a populations genetic variability, which arises through mutation (e) natural selection may result in changes in allele frequencies in a population
The reason spontaneous mutations do not have an immediate effect on allele frequencies in a large population is that: a. mutations are random events, and mutations may be eitherbeneficial or harmful. b. mutations usually occur in males and have little effect oneggs. c. many mutations exert their effects after an organism hasstopped reproducing. d. mutations are so rare that mutated alleles are greatlyoutnumbered by nonmutated alleles. e. most mutations do not change the amino acid sequence of aprotein.
Which of the following is a factor that, by itself, does not promotewidespread changes in allele or genotype frequencies?a. New mutationb. Natural selectionc. Genetic driftd. Migratione. Nonrandom mating
Which of the following is a true statement concerning genetic variation? Select one: А. It must be present in a population hefore natural selection can act the population. upon. В. It arises in response to changes in the environment. C. It tends to be reduced by the processes involved when diploid organisms produce gametes. D. It is created by the direct action of natural selection. E. A population that has a higher average heterozygosity has less genetic variation than one with a lower average heterozygosity.
1a-Farmers often use pesticides to kill insects to protect their crops. However, insect populations will often develop resistance to any pesticides that are used on them within a few generations. What is the selective pressure in such a scenario? O a. Pesticide treatment O b. The crops Oc. Pesticide resistance Od. The insects Oe. Mutation 1b-What is/are the element(s) required for a population to change due to natural selection? Select all options that are correct below. a. Variability in a population b. Genetic drift c. Inheritance of traits d. Differential survival e. Evolution
Certain species of blind fish living in perpetual darkness in the ocean depths have evolved from ancestors that could see. Research indicates that the brain centers for vision in these fish is degenerating, whereas the brain centers controlling other senses are enlarging. What might be the MOST probable reason for the loss of vision in these fish? O A. exposure to mutagens that caused the loss of vision B. progressive selection of genetic variants in the population leading to blindness as an evolutionary adaptation C. infection by cave-dwelling microorganisms that has led to degeneration of the eyes O D. extreme high pressure at the ocean depths causing a deterioration of vision