Northern Elephant Seals were hunted almost to the point of extinction in the 1800s. Although breeding programs have helped to increase the Northern Elephant Seal population these days, they show much less genetic variation than other seal species. This is an example of: The bottleneck effect The founder effect Natural selection Artificial selection OOO

Northern Elephant Seals were hunted almost to the point of extinction in the 1800s. Although breeding programs have helped to increase the Northern Elephant Seal population these days, they show much less genetic variation than other seal species. This is an example of: The bottleneck effect The founder effect Natural selection Artificial selection OOO

Name: Northern Elephant Seals were hunted almost to the point of extinction
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Description: Northern Elephant Seals were hunted almost to the point of extinction in the 1800s. Although breeding programshave helped to increase the Northern Elephant Seal population these days, they show much less genetic variationthan other seal species. Thi

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter40: Population Ecology

Section: Chapter Questions

Problem 1CT

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Similar questions

Natural selection tends to work toward genetic unity;the genotypes that are most fit produce the mostoffspring and increase the frequency of adaptive allelesin the population. Yet there remains a great deal ofvariability within the populations of species. Describethe factors that contribute to this genetic variability. Provide the link of references
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
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
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
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
A change in one or more characteristics of a population that is heritableand occurs from one generation to the next is calleda. natural selection.b. sexual selection.c. population genetics.d. evolution.e. inheritance of acquired characteristics.
One way for disruptive selection to occur is ifa. the population contains diversity.b. the environment contains diversity.c. pollution is present.d. natural selection occurs.e. All of these are correct.
Choose the best below ? The northern elephant seal went through a severe population declineas a result of hunting in the late 1800s. As a result of a hunting ban,the population has rebounded but is now homozygous for nearlyevery gene studied. a. mutationb. natural selectionc. founder effectd. bottlenecke. gene flowf. nonrandom mating
In a particular population of mice, certain individualsdisplay a phenotype called short tail, which is inherited as a dominant trait. Some individuals display arecessive trait called dilute, which affects coat color.Which of these traits would be easier to eliminatefrom the population by selective breeding? Why?
The elaborate tail of the peacock (Pavo cristatus) is approximately 120 cm to 150 cm long, while the tail ofthe peahen is quite short. The long tail reduces the male bird’s ability to maneuver and fly and makes him moreconspicuous to predators. Suggest at least one reason why this cumbersome structure has not been eliminatedby natural selection.
In which of the following pairs do both evolutionary processes introduce new genetic variation into a population?a. natural selection and genetic driftb. mutation and gene flowc. natural selection and gene flowd. gene flow and genetic drift
Which term below means the loss of all but one allele at a gene locus in a population?a) Bottleneck effectb) Founder effectc) Genetic fixationd) Genetic drifte) Natural selectionf) Fitness