Which of the following examples is the only one to likely be under the influence of natural selection? Group of answer choices A circumcised streetcat with beautiful green eyes A bird population where some individuals have longer beaks than others A sunflower that grew tall because of excessive nutrients A population of rabbits where all individuals have exact identical fur color

Which of the following examples is the only one to likely be under the influence of natural selection? Group of answer choices A circumcised streetcat with beautiful green eyes A bird population where some individuals have longer beaks than others A sunflower that grew tall because of excessive nutrients A population of rabbits where all individuals have exact identical fur color

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter11: Evolution And Its Processes

Section: Chapter Questions

Problem 3RQ: Which of the following situations will lead to natural selection? a. The seeds of two plants land...

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Imagine a group of adventurous people board a boat and leave for another continent. When they get there, they began to prosper and grow in size. After a few generations, some of the families experience an abnormally high number of birth defects, of the same type. This population is probably experiencing: O Kin Selection Founder Effect O Natural Selection O Post-Zygotic Isolation
An earthquake decimates a ground-squirrel population, killing 98% of the squirrels. The surviving population happens to have broader stripes, on average, than the initial population. If broadness of stripes is genetically determined, what effect has the ground-squirrel population experienced during the earthquake? genetic drift by a founder event O directional selection O gene flow O genetic drift by bottleneck effect O disruptive selection
What is an adaptation? (select all that apply) A trait that more prevalent in a population as the result of natural selection O A trait that gives an organism a reproductive advantage in its current environment A trait that gives rise to a new species
In a population of lizards, color is genetically determined. The current population has two two phenotypes: blue and yellow. Which of the following scenarios could result in evolution by migration? O A disease indiscriminately reduces the population by 90%. Birds are better able to see and therefor prey on blue lizards The population is joined by individuals from a nearby population that has an allele for a red phenotype. Females preferentially mate with individuals exhibiting the blue phenotype.
/hich of the following is an example of disruptive selection? O Short weeds that grow close to the height O Dark-colored moths that hl survive to reprod
In terms of natural selection, what is a "detrimental mutation"? O One that has a negative effect on fitness in a given environment O One that does not affect fitness in a given environment One that has a positive effect on fitness in a given environment MacBook Air 888 00 吕0 F7 F6 F5 F4 F3
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
If a populations allele and genotype frequencies remain constant from generation to generation, (a) the population is undergoing evolutionary change (b) the population is said to be at genetic equilibrium (c) microevolution has taken place (d) directional selection is occurring, but only for a few generations (e) genetic drift is a significant evolutionary force
In which of the following pairs do both evolutionary processes introduce new genetic variation into a population? a. natural selection and genetic drift b. mutation and gene flow c. natural selection and gene flow d. gene flow and genetic drift
The neutral theory of evolution proposed that most genetic mutations are functionally neutral or nearly neutral. Neutral mutations would be fixed in a population by: O the invariance of DNA O random genetic drift O balancing selection natural selection asexual reproduction
In a population of birds, the average beak size is selected against, while large and small beak sizes are selected for. This is an example of: O Disruptive selection Balanced polymorphism Elitist selection O Directional selection Stabilizing selection