Question

Question 110 pts

All life on earth shares a common genetic history.

Group of answer choices

True

False

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Question 210 pts

__________ is the movement of gene sets in and out of a population due to death, immigration, emigration, etc. smoothing out the variations in characteristics over time.

Group of answer choices

Gene Flow

Protein Flow

Lipid Flow

Gene Growth

Gene Transfer

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Question 310 pts

By selecting for or against certain Genes (or traits), natural forces shape evolution at the population level for a species.

Group of answer choices

True

False

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Question 410 pts

The Bottleneck Effect occurs when ___________.

Group of answer choices

large groups of individuals leave their home population and establish new settlements, mating only among themselves

many members of a population die, resulting in a great loss of genetic diversity

small groups of individuals leave their home population and establish new settlements, mating only among themselves

many members of a population reproduce causing too much genetic diversity within the population

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Question 510 pts

Which one of the following would a Biologist describe as Microevolution?

Group of answer choices

dramatic biological changes, such as the origin of wings on a bird which leads to a new novel characteristic and true flight

a change in the gene pool of a population from one generation to the next but no new species are formed

the extinction of species

the formation of new species

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Question 610 pts

____________ is the change in large characteristics of a group of organisms leading to novel traits, new species, and unique new groups of organisms.  

Group of answer choices

Microevolution

Macroevolution

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Question 710 pts

Blue-footed booby birds have blue, webbed feet and are comically clumsy when they walk on land. Evolutionary scientists view these feet as

Group of answer choices

a curiosity that has little to teach us regarding evolution.

an example of a trait that has not evolved.

an example of a trait that is poorly adapted.

the outcome of a trade-off: Webbed feet perform poorly on land, but are very helpful in diving for food.

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Question 810 pts

An elk herd is observed over many generations. Most of the full-grown bull elk have antlers of nearly the same size, although a few have antlers that are significantly larger or smaller than this average size. The average antler size remains constant over the generations. Which of the following effects probably accounts for this situation?

Group of answer choices

Diversifying Selection

Stabilizing Selection

Directional Selection

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Question 910 pts

The mode of Natural Selection in which one extreme phenotype is fittest and the environment selects against the others is called ________.

Group of answer choices

Directional Selection

Diversifying Selection

Concert Ticket Selection at Ticketmaster

Stabilizing Selection

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Question 1010 pts

A female peacock choosing the most colorful male peacock would be a good example of _______ Selection.

Group of answer choices

Homosexual

Intrasexual

Heterosexual

Bisexual

Intersexual

Answer 1

Question 1

Answer: The statement "All life on the earth shares a common genetic history " is true. This is because all organisms on the earth shares a common ancestor and genetic heritage through horizontal gene transfer.

Question 2

Answer: The movement of alleles of a gene from one population to other population through death, immigration and emigration is called as gene flow. Hence, option 1 is the correct answer. Protein flow, lipid flow and gene growth does not involve movement of genes sets among populations. Hence, option 2, 3,and 4 are incorrect. Gene transfer involves the transfer of gene from one species to other by genetic engineering technology. Hence, option 5 is incorrect.

Question 3

Answer: The statement "By selecting for or against certain genes or traits, natural forces shape evolution at the population level for a species" is true. This is because of evolutionary process such as natural selection that results in the adaptation of individual to certain environmental conditions by selectively reproducing changes in its gene or traits (genotype).