Unit 8 - Evolution Review #2

Charles Darwin sailed on the HMS Beagle with what job?

• naturalist

• captain

• cook

• doctor

The COVID virus (SARS-CoV-2) formed a number of variants because

• it spreads easily between individuals

• it could cause severe disease

• the original virus had a large number of variations

• mutations arose when it reproduced.

Darwin bred pigeons with different variations in order to produce types that were quite different from each other. This is an example of:

• natural selection

• artificial selection

• coevolution

• homologous structures

Which of the following was NOT an observation made by Darwin from his voyage on the HMS Beagle?

• Remains of ancient organisms were similar to present organisms, but not the same.

• The genes of similar organisms showed many similarities.

• Similar organisms showed variations within the same environment.

• Similar-looking species could be found in different places.

In an eagle population, there is a variation of wingspan lengths. The eagles with longer wingspans can fly larger distances, allowing them to collect food more easily. Which of the following is true?

• The eagles with longer wingspans were born with shorter wingspans but adapted to their environment.

• Over time, the eagle population may show disruptive selection, favoring the longer wingspans.

• Over time, there may be more individuals with longer wingspans in the population.

• Both B and C are true.

Which of the following statements was NOT part of Darwin’s theory?

• Species can adapt to their environments, forming other species.

• Populations change over time.

• Individuals compete to survive.

• Individuals with the best fitness have a greater chance of survival.

Organisms that are well-suited for their environments are said to have high

• allele frequency

• fitness

• selection

• variations

If an antibiotic is able to destroy many types of bacteria, it is called

• a mutated antibiotic

• a viral antibiotic

• a broad-spectrum antibiotic

• a narrow-spectrum antibiotic

A set of all the alleles within a population is called

• gene flow

• genetic equilibrium

• speciation

• gene pool

Hawaiian honeycreeper birds have different beak shapes. On one island, honeycreepers have long, curved beaks and on another island, they have short beaks. What is the best explanation for this difference?

• The two types of birds separated by their beak type when migrating

• The birds had a common ancestor but adapted to different habitats

• Individual birds adapted to have different beak shapes

• The birds adapted due to selective mating