Which one of these statements about fitness is most accurate? A. Fitness is a measure of strength & health B. Fitness may change at a population level, but is constant for an individual C. Fitness can only be measured at the population level D. Fitness is a measure of reproductive success E. Fitness is an overall measurement that applies to all evolutionary mechanisms

Which one of these statements about fitness is most accurate? A. Fitness is a measure of strength & health B. Fitness may change at a population level, but is constant for an individual C. Fitness can only be measured at the population level D. Fitness is a measure of reproductive success E. Fitness is an overall measurement that applies to all evolutionary mechanisms

Lifetime Physical Fitness & Wellness

15th Edition

ISBN:9781337677509

Author:HOEGER

Publisher:HOEGER

Chapter1: Physical Fitness And Wellness

Section: Chapter Questions

Problem 8AYK

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Which of the following is the best definition of fitness? a. The ability to increase the number of alleles in a gene pool b. The ability to survive for a long time c. The ability of an individual to adapt to a changing environment d. The ability to produce many offspring
Which of the following definitions best describes 'biological fitness'? O a heritable trait that increases the match of an individual to its environment. competition among individuals for resources that allow them to have more offspring. O variability in the population for a trait that increases survival. the ability of an individual to produce offspring that survive and reproduce, relative to other individuals in the population. similar reproductive success among individuals in a population.
In Hamilton's rule, rB > C, the term "C" refers to a. the number of offspring an individual could potentially gain as a result of behaving altruistically b. the average number of offspring an individual is expected to lose as a result of behaving altruistically c. the coefficient of relatedness between two individuals d. the number of offspring gained by an individual that receives help from an altruist
When an individual behaves in a way that reduces its own fitness butincreases the fitness of others, the organism is exhibitinga. kin selection. b. group selection. c. altruism. d. selfishness. e. ignorance.
Which of the following principles of selection are true for both the sickle cell and rock pocket mice examples? Check all that apply. (1 or more are correct). Group of answer choices A_The same genotype can have higher fitness in one environment, but lower fitness in another environment B-Some genotypes have higher fitness than other genotypes C-Some genotypes have lower fitness than other genotypes
What would be the best measure of the evolutionary fitness of individuals, from the options available? Measure the percent of individuals with certain genotypes in a population Measure the average lifespan of individuals with certain genotypes in a population Measure the average number of offspring of individuals with certain genotypes in a population
A breeding pair of birds receives help raising their young from an unrelated male bird. This behavior is termed cooperative breeding and in some ways this seems like an evolutionary paradox since helpers seem to be acting in ways that increase the fitness of others at their own cost. .How might providing this assistance improve the fitness of the unrelated male bird? Increasing the fitness of the unrelated offspring directly increases the unrelated bird's fitness O The cooperative relationship helps the unrelated male survive until he can find a mate and produce offspring of his own Rearing unrelated offspring delays sexual maturity in the helper bird so he has fewer offspring over the course of his life. Because he does not ever produce offspring of his own, the helper bird has a longer and healthier life.
Sexual selection occurs whena. one sex has a higher fitness than the otherb. a species exhibits sexual dimorphismc. there is a male dominance hierarchy and only the alpha male reproduces. d. There is monogamous mating.e. A trait is favored by one sex such that individuals of the opposite sex possessing that trait have an increased likelihood of reproducing.
n 1978, scientists studied how the fitness of marine sticklebacks would be affected if they were introduced into a freshwater environment. They collected 90 male and 90 female sticklebacks from a marine population and 10 male and 10 female sticklebacks from a freshwater population. The 200 sticklebacks were introduced into a freshwater environment that had no stickleback fish previously. Which of the following best describes the likely results of the scientists’ investigation of the fitness of the sticklebacks that were originally from a marine environment? The fitness of the sticklebacks from the marine environment increased because their chance of survival and reproduction is greater in the freshwater environment than in the marine environment. Answer A: The fitness of the sticklebacks from the marine environment increased because their chance of survival and reproduction is greater in the freshwater environment than in the marine environment. A The…
A difference in survival and reproduction among members of a population that vary in one or more traits is called ________.
Which of the following is calculated as the survival rate of a genotype multiplied by the average number of offspring for individuals of that genotype? O Absolute Fitness O Mean Relative Fitness Selection Coefficient O Expected Genotype Frequency O Relative Fitness
An individual bird may behave apparently altruistically in a way that decreases its own fitness (by cost C) yet increases the fitness of another individual or set of individuals (by benefit B each). According to Hamilton’s Rule, if natural selection favors this behavior to help four grandchildren, it should also be favored when the recipients are Group of answer choices eight first cousins All the given answers are correct two siblings four nieces