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3.
Choose the best answer.

A chronological system of measurement that scientists use to describe the timing of events and its relationship to life and the history of the earth is the ____.

natural selection

Geologic Time Scale

gradualism

speciation
4.
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The changing frequency of an allele occurring in a population over time is _____.

genetic drift

gene pool

gene flow

speciation
5.
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What is gradualism?

a species' or population's entire group of alleles

evolutionary mechanism in which an individual from one population is introduced to another population

the theory that all evolution is slow and proceeds at a steady rate over a long period of time

the process of forming a new species from an existing species
6.
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The results of genetic drift are more apparent in ______________ populations.

ancient

moving

big

small
7.
Select 3 that apply.

The domain is the most general category in the classification system. What are the three domains of the biological classification system?

bacteria

eucharitic

eukarya

archaea

imminent

cathartia
8.
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Proteins, amino acids, DNA, organic and inorganic molecules all freely swimming in high concentrations in the primordial seas refers to _____.

primordial soup

big bang

endosymbiosis

eukaryotic
9.
Choose the best answer.

Which of the following is the definition of gene flow?

the changing frequency of an allele occurring in a population over time

a species' or population's entire group of alleles

evolutionary mechanism in which an individual from one population is introduced to another population

the process of forming a new species from an existing species
10.
Choose the best answer.

A family tree that shows how organisms are related to each other is called

taxonomy.

phylogeny.

radioactive dating.

comparative anatomy.
11.
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A branch of biology that deals with classifying and naming organisms is ______.

genus

binomial nomenclature

taxonomy

phylogeny
12.
Choose the best answer.

Why is polyploidy not a very good explanation for how animals increased the number of chromosomes they have?

It will make animals bigger.

It is usually fatal for animals.

It will make animals stronger.

It is beneficial for animals.
13.
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Which of the following shows Darwin's theory of evolution in the correct order?

competition, survival of the fittest, overproduction

overproduction, competition, survival of the fittest

competition, overproduction, survival of the fittest

survival of the fittest, competition, overproduction

All Answers 1

Answered by GPT-5 mini AI
3. Geologic Time Scale

4. Genetic drift

5. The theory that all evolution is slow and proceeds at a steady rate over a long period of time

6. Small

7. Bacteria; Eukarya; Archaea

8. Primordial soup

9. Evolutionary mechanism in which an individual from one population is introduced to another population (gene flow)

10. Phylogeny

11. Taxonomy

12. It is usually fatal for animals.

13. Overproduction, competition, survival of the fittest