Answered: Hominid brain size has increased over…

Hominid brain size has increased over the last 3 million years. This is probably due to: A. sexual selection B. stabilizing selection C. disruptive selection D. directional selection E. mutation.

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 6TYU: The continued presence of the allele that causes sickle cell anemia in areas where falciparum...

See similar textbooks

Related questions

Q: ou are wandering in the Amazon rainforest, when you hear the loud call of an animal. You walk in the…

A: Amazon rainforest is the world’s largest tropical rainforest and has the largest biodiversity in the…

Q: Jean-Baptiste Lamarck

A: Jean-Baptiste Lamarck said- If an organism changes during life in order to adapt to its environment,…

Q: People who are heterozygous for the cystic fibrosis gene are morelikely than others to survive a…

A: Genes are located on chromosomes and different forms of a gene are known as alleles. The standard…

Q: Which of the following situations will lead to natural selection? a. The seeds of two plants land…

A: Natural selection is a phenomenon in which the population of living species adapts according to…

Q: Which of the following most accurately describes mutations? a. They typically have immediate and…

A: Evolution is defined as the change in trait of an individual over a period of time.

Q: As scientists in Canada traveled further north into colder climates measuring the size(mass) of…

A: Bergmann's rule is an ecogeographical rule that claims that larger creatures are found at higher…

Q: Natural selection favored dark-colored fur in the rock pocket mouse. The selective force on the…

A: Natural selection It is a natural biological process where organisms adapt and change there…

Q: Given a positive genetic correlation between the lengths of the maxilla and the mandible of a bird…

A: Positive correlation and pleiotropic effects.

Q: Which of the following is correct (can be more than 1): Genetic drift is an important mechanism of…

A: statements (B), (c) , (E),(F) are true .

Q: Environments all over the world are changing as a result of global warming. Will this cause natural…

A: The gradual elevation in the temperature of the earth is global warming. It results from the…

Q: How does natural selection change allele frequencies in populations? A. Natural selection controls…

A: Natural selection is one process of evolution. According to this process, some traits are naturally…

Q: What is inbreeding depression and why is it particularly a concern for conservation biology?…

A: The mating of closely related species is termed inbreeding. In such breeding, the new recombination…

Q: A derived trait ... Group of answer choices A: is something we develop in our lifetime and pass on…

A: Ancestral traits are those which pass from one generation to another. Analogous traits are those…

Q: What effect does combining genetic drift and natural selection have on beneficial mutations? b. How…

A: Natural selection is the adaptation and alteration of populations of living organisms. Individuals…

Q: Which of the following is an example of stabilizing selection?a. Over time, Equus developed…

A: Evolution is defined as the net directional change in the characteristics of a population over time.…

Q: Based on these data, what conclusions could the researchers make? a. Directional selection will push…

A: The most suitable answer for the question is:d. There was higher mortality in yellow-brown snails…

Q: Founder and bottleneck effects are examples of what? Group of answer choices A-mutation B-genetic…

A: A population evolves when the frequencies of its genotype change over time. Some evolutionary…

Q: Narwhals are related to other whales. The extreme phenotype of the tusk demonstrates which type of…

A: The narwhal is a medium-sized toothed whale that possesses a large "tusk" from a protruding canine…

Q: After a highway is destroyed by an earthquake, two formerly isolated populations of deer can now…

A: D. Gene Flow The answer to this question is gene flow as it refers to the exchange of genetic…

Q: You conduct an exercišé iñ the conditions under which survival of snails is selective-that is,…

A: The answer to the question is: Yes, because there was a change in the mean shell thickness.

Q: When dark-colored mice from two different populations living hundreds of miles apart were examined,…

A: Several conclusions can be drawn from this observation: The adaptation for fur color in the mice…

Q: Biologists sometimes say that “natural selection depends on the specific environment where a species…

A: The correct option is B Traits can be helpful or harmful. If populations of a species are in…

Q: Even though Hardy and Weinburg showed that the process of random reproduction will not alter gene…

Q: Which of following is a change that accompanied the increase in brain size as hominids evolved? a…

A: Introduction: The evolution of the human brain has been a combination of restructuring of brain…

Q: How is genetic drift like natural selection? A. They both depend upon the founder effect B. Both…

A: "Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Physiological changes only become relevant to evolution if they a. have measure impact within a…

A: Answer Opyion c) Both A and B

Q: Check all of the following that are true:

A: b.Both small as well as large populations can evolve by genetic drift(small being frequent). d.…

Q: What were the requirements that Charles Darwin believed were necessary for adaptive evolution?

A: Charles Darwin and Alfred Russel Wallace proposed in 1958 that rapid multiplication of organisms and…

Q: According to Darwin, why do certain traits become more common in a population over time? (Hint-…

A: Charles Darwin proposed the theory of evolution by means of natural selection after his voyage on…

Q: Which type of natural selection is involved in sympatric speciation? Group of answer choices A.…

A: Sympatric speciation is the evolution of a new species from the surviving ancestral species. Both…

Q: Simmons and Scheepers in their article Winning by a Neck present evidence that the long neck of the…

A: In a particular ecosystem, it is important to evolve along with the time that may help to live and…

Q: What is true of populations that are in Hardy-Weinberg equilibrium? a. Organisms are constantly…

A: Natural selection is the preferential survival and reproduction of individuals because of…

Q: You are studying a species of beetle known as a Flumbodoodle Beetle. The beetle has long spikes on…

A: Natural selection is a kind of evolution in which the organism having a particular trait will…

Q: Primatology is part of anthropology because: Group of answer choices A: They can help us understand…

A: Primatology is a branch of anthropology that's a scientific study of primates. It is an important…

Q: Ina population of birds, the average beak size is selected against and the largeand small sized…

A: Evolution is a natural process that includes several changes over many generations in the…

Q: A farmer breeds sheep with the desired traits of disease resistance and tine wool. After several…

A: Gene pool Gene pool is the collection of all type of gene present in a population. This gene may be…

Q: some bears, such as those with thin or no hair, moved south and other bears with very thick fur…

A: * The polar bears with thin or no hair move towards the and other bears with thick fur stayed in…

Q: In marine iguanas males are much larger than females and fight with one another for access to areas…

A: A. It is not disruptive selection because it's sex-specific. B. It is intrasexual selection because…

Q: Which statement is correct, based on current evolutionary theory? a. Selection will favor alleles…

A: Natural selection is a process in which nature select the best individual who is able to survive in…

Q: In 1959 Daniel Yuh set up a long-term study of cataloging the blood types of a group of foragers in…

A: Genetics is a term that refers to the study of genes and their roles in inheritance - in other…

Q: B. Organisms do not change Ċ. Organisms pass on acquired traits to their offspring D. Organisms…

A: Introduction :- Some differences improve an individual's ability to survive and reproduce in their…

Q: Which of the following promotes adaptive evolution in populations? A)High genetic diversity…

A: Answer :- Option (D) is correct. - High genetic diversity. - Selection pressure for an environmental…

Q: Darwin based his Theory of Evolution by Natural Selection on series of observations. Which of the…

A: In today's world when a pandemic spreads those who have strong immunity could survive and could be…

Q: The five-finger forelimb that all air-breathing vertebrates share is an example of: Group of answer…

A: Throughout the animal kingdom different phylum possess different characteristics. Some of the…

Q: During drought years on the Galapagos, small, easily eaten seeds become rare leaving only large,…

A: Darwin proposed a theory called natural selection to describe evolution. According to his theory,…

Q: Which of the following is not true of natural selection? (a) natural selection acts to preserve…

A: The phenomenon of natural selection is based on the evolutionary changes that occur within the…

Q: In white sands national monument in New Mexico there is a population of very pale lizards whose pale…

A: These above the processes through which organism might gain or change its characteristics.

Q: All of the following are causes for evolutionary concern in small populations, EXCEPT: a.…

A: Answer : Option B is correct : Natural selection can be overwhelmed by drift, and thus cannot…

Q: Which of the following best states a condition which promotes natural selection of a species? A)One…

A: Evolution is an orderly change from one condition to another that are favourable for an individual…

Concept explainers

Human Evolution

Human evolution is the process of evolution of humans from early man to anatomically modern humans. The process of evolution in humans leads to the gradual development of traits like bipedalism. Humans are the highly social animals that make them the most advanced animal on Earth. Human evolution is an outcome of interaction among the following processes:

Question

Hominid brain size has increased over the last 3 million years. This is probably due to:

	A.	sexual selection
	B.	stabilizing selection
	C.	disruptive selection
	D.	directional selection
	E.	mutation.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.

Similar questions

What is neutral evolution? A. When certain genes are present or absent in populations regardless of selection (they are not advantageous or disadvantageous). B. When certain genes are present or absent in populations due to sexual selection (they are selected for by the opposite sex). C. When certain genes are present or absent in populations due to natural selection (they are advantageous or disadvantageous). D. Neutral evolution does not exist.
What is neutral evolution? A. Neutral evolution does not exist. B. When certain genes are present or absent in populations due to natural selection (they are advantageous or disadvantageous). C. When certain genes are present or absent in populations regardless of selection (they are not advantageous or disadvantageous). D. When certain genes are present or absent in populations due to sexual selection (they are selected for by the opposite sex).
Which of the following is true about adaptation? a) It occurs through the inheritance of acquired characteristics b) It always results in the evolution of new traits c) It is a result of chance mutations d) It is the result of natural selection acting on heritable variation
Which of the following statements is inaccurate? Multiple choice (one answer is correct) a.The genetic variation that occurs in a population from mutation is non-random b.Natural selection is the only mechanism that consistently causes adaptive evolution c.Evidence demonstrates that whales evolved from land-dwelling organisms d.Natural selection acts on populations
Which of the following situations will lead to natural selection? a. The seeds of two plants land near each other and one grows larger than the other. b. Two types of fish eat the same kind of food, and one is better able to gather food than the other. c. Male lions compete for the right to mate with females, with only one possible winner. d. all of the above
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 continued presence of the allele that causes sickle cell anemia in areas where falciparum malaria is prevalent demonstrates which of the following phenomena? (a) inbreeding depression (b) frequency-dependent selection (c) heterozygote advantage (d) genetic drift (e) a genetic bottleneck
In marine iguanas males are much larger than females and fight with one another for access to areas that are preferred by females. What type of evolutionary force is causing the increase in male size? Group of answer choices A. disruptive (natural) selection B. intrasexual selection C. disruptive (natural) selection D. stabilizing (natural) selection E. intersexual selection
Which of the following is true about natural selection? a) It always results in the evolution of new traits b) It always results in the strongest individuals surviving c) It always results in the fittest individuals reproducing d) It always results in the best-adapted individuals surviving
What does “descent with modification” mean?a. Populations that change quickly are likely to become extinct.b. Inherited traits change from generation to generation.c. Tracing an evolutionary tree from top to bottom reveals changes inspecies diversity.d. Parents change their own features before passing them on to offspring.
When taking the question, it would appear as: Consider global warming, a continual gradual increase in average temperatures. How might you expect this to affect natural selection? A.environmental changes are unpredictable, and natural selection is a random process, so it is difficult to predict outcome B.species from warmer climates are likely to expand their ranges into higher latitudes C.traits that increase reproductive success under warmer temperatures are likely to increase in frequency in a population D.the stress caused by higher temperatures will increase mutation rates
Which is an example of directional selection after several generations on an island population from an original population that had an equal number of individuals with thin, moderate, and thick sized legs? A. Anolis lizards that have evolved thinner legs b. Anolis lizards that have evolved thin and thick legs c. Anolis lizards that have evolved moderate sized legs d. All of the above E. none of the above