According to Malthus, human populations grow

a.    linearly.

b.    slowly.

c.    economically.

d.    exponentially.

What are the four components of natural selection?

What are the 5 requirements for Hardy-Weinberg equilibrium?

The outermost tail feather of the male barn swallow is longer than that of the female barn swallow. The long tail feather helps the males attract females, but it also requires the males to use extra energy to fly.

What force of genetic change does this describe? 

Be specific.

If mice with various colors have colonized a habitat with an intermediate color, what type of natural selection will occur?

Frogs, lizards, and birds all have a similar arrangement of bones in their limbs.  What are these structures called?

What was the major idea that Darwin presented in his book The Origin of Species?

In a lizard population, a mutation occurs that results in a new colored skin allele.  What would determine if this allele became more common?

Explain the difference between microevolution and macroevolution.

In a mouse population inhabiting a grassland area, what would cause a new coat color allele?

Homologous structures most likely indicate that organisms have a _________ ___________.

The hypothesis that evolution occurs at a slow, gradual pace is known as _____________.

Starting in 1954, commercial fishers in the northwest Pacific were paid by weight, rather than by the individual fish, for pink salmon. The fishers increased the use of a type of net that selectively catches larger fish.

What happened to the size of the fish?  What type of natural selection is this?

If freckles is a dominant trait and 64% of the human population has freckles, what is the frequency of the recessive allele?

The change of allele frequency due to migration into and out of a population is called __________________ .

When a species no longer produces any more descendants, it is considered ________________ .

The marine iguanas of the Galápagos Islands feed on seaweed and algae. Marine iguanas have flattened tails while other species of iguanas that live inland on the Galápagos and on the South American mainland have rounded tails.  Explain this difference in tail shape.

What is the system of naming called that Linnaeus used?

Similar structures are present in the embryos of fish, chickens, and rabbits.  In fish, these structures develop into gills, but in chickens and rabbits, they either disappear or develop into other body parts later in embryonic development.

These structures in the embryos of all three species show the species all share a ___________ ___________.

If 45% of the alleles in a population of elk are the dominant allele, what percent of the population are homozygous recessive?

The random change of allele frequency is called ___________________.

This increases as population size decreases.

Using the half-life of a radioactive isotope to date fossils is called _______________.

The aardvark and anteater both have adaptation for eating similar food?

These structures that are simiilar in form are called________ and caused by ________ evolution.

How was Lamarck's idea of evolution different from Darwin's idea?

European rabbits were introduced to Australia in 1859. The rabbits reproduced rapidly in their new habitat, displaced other animals, and overgrazed vegetation. In an attempt to reduce the rabbit population, a virus was introduced in 1951. This virus is usually deadly to European rabbits.

When the virus was first introduced, the rabbits died in large numbers, but the death rate decreased over time. Explain why the death rate decreased.

Approximately 1 in 500 African-Americans are born with sickle cell anemia,  what percent of African-Americans are carriers?

On island chains like the one shown below, animal populations that spread from the main island to the other islands can evolve into separate species. What is this process called?

Chloroplasts are thought to be the result of an invasion of large prokaryotic cells by _______________________.

What is the type of natural selection called where the median variation is eliminated or decreased?