EBK BIOLOGY
5th Edition
ISBN: 9780100667976
Author: Maier
Publisher: YUZU
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Textbook Question
Chapter 12, Problem 9LTB
Similarity in skin color among different human populations appears to be primarily the result of________
- natural selection;
- convergent evolution;
- which biological race they belong to;
- A and B are correct;
- A, B, and C are correct
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Students have asked these similar questions
Evolution is a process of___
in a population through___
variation over___
Evolution involves___
and___.
True or Flase: Evolution through natural selection can NEVER be observed because it happens too slowly for humans to notice.
Which of the following statement about the Theory of Special Creation (TSC) is correct?
-In contrast to evolution, TSC believes that all the estimated >100 million species on earth were created individually and separately.
-TSC also states that, since their creations, these species have remained the same forms without much change.
-For TSC, only a very short time has elapsed since the creations of all the species on earth.
-TSC does not believe that these millions of species shared a common ancestor.
-All of the above
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- Which of the following examples (some from class) are examples of evolution by natural selection? Choose all that apply. (1 or more are correct) Group of answer choices A_Evolution of rock pocket mice population to blend in with dark lava environment B_Evolution of high prevalence of disease alleles of an endangered species whose habitat was quickly destroyed to less than 5% remaining C_Evolution of high prevalence of sickle cell allele in areas with endemic malaria D_Evolution of a small population where most of the individuals with a red-hair mutation were killed off by a stormarrow_forwardthe evolutionary relationship between mode O Humans are descended from chimpanzees O Humans and chimpanzees had a common ancestor several millior ears ago Humans and chimpanzees had a common ancestor several million years ago; sinc Chimpanzees are more closely related to gorillas than they are to humans QUESTION 2 Which of the following statements about hominins is FALSE? ALS Each hominin species on Earth was directly descended from the species that preced Multiple hominin species lived at the same time The genus homo arose about 2.5 million years ago We have now discovered a vast number of hominin fossils, allowing us to trace the e QUESTION 3 Which of the following are ways in which early hominins differed from apes? (select alarrow_forwardNatural selection results in the adaptation of organisms to the circumstances of their way of life and their environment True or Falsearrow_forward
- Natural selection acts upon ____________________________, evolution upon _______________________________. What is the gene pool and how does natural selection act upon it? If a version of a gene confers an advantage to survival and reproduction, that version of the gene will be favored by natural selection and we can expect the frequency of that gene to ______________________ within the population over time. Versions of the gene that do not confer an advantage (or confer a disadvantage) should become _______________ prevalent . This generation to generation change in the gene pool is called ________________________. Changes to the genetic makeup of a population and the individuals within it can arise via two mechanisms. List and describe both. Both of these processes are ________________________________. Once created, new combinations of genes will be acted upon by _________new alleles_______________________. How is Darwinian “fitness” different than the typical definition used in…arrow_forwardWhich of the following statements about evolution is incorrect? Evolution occurs through natural selection Evolution is a gradual process that occurs over time in populations. Evolution is a goal-oriented process that aims to create perfect organisms designed to handle what the future environment might throw at it. Evolution is influenced by genetic variation within populationsarrow_forwardThere is no such thing as truly direct evidence in evolution. Because of the long time spans, we can never really observe the process of evolution. True Falsearrow_forward
- Meaningful evolution occurs when __________. ○ a heritable trait affects survival and fitness ○ a heritable changed trait gives an organism a fitness advantage ○ a changed trait gives an organism a disadvantage ○ environmental factors changearrow_forwardThis question will assess your understanding of popular thinking about Evolution by Natural Selection. The following interview appeared in the NY Times about the evolution of human skin. Your task is to read the interview and answer the question below: Claudia Dreifus. 2007. A Conversation with Dr NG Jablonski: Always Revealing, Human Skin Is an Anthropologist's Map. NYT 9 Jan 07. Interviewer: And what have you found? Scientist: .There was a tremendous takeoff in human evolution about two million years ago when primates who could no longer be called apes appeared in the savannahs of East Africa. These early humans ran long distances in open areas. In order to survive in the equatorial sun, they needed to cool their brains. Early humans evolved an increased number of sweat glands for that purpose, which in turn permitted their brain size to expand. As soon as we developed larger brains, our planning capacity increased, and this allowed people to disperse out of Africa. There's fossil…arrow_forward"Natural selection is the only mechanism of evolution." Please correct this statement in a meaningful wayarrow_forward
- Which the following statements about Darwin's theory of natural selection is true? O In order to reproduce more successfully, an individual must evolve so that it adapts to its environment. The natural environment consistently causes variation of certain traits in the population. O Individuals with inherited traits that are better suited to the local environment are more likely to survive and reproduce than less well-suited individuals. Natural selection, by its cumulative effects over long periods of time, could have caused random changes in ancestral species, thus giving rise to two or more descendant species.arrow_forwardWhich of the following statements regarding evolution is FALSE? evolution is a relatively slow process Oall of these statements are TRUE evolution operates at a variable speed transitional forms appear during periods of rapid evolutionary change evolution operates over the course of multiple generationsarrow_forwardONE OF THE STATEMENTS OF EVOLUTION THEORY OF CH. DARVIN IS Select one: adaptations of organisms have relative nature all species are adapted to different conditions of existence adaptations of organisms have absolute nature all species originated by means artificial selectionarrow_forward
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