Exam 15: How Populations Evolve

Imagine that one of the original four mice that escape from a research lab is blind due to a genetic defect. If the mice breed and most of the mice born in subsequent generations are blind from birth, this is most likely a case of:

A population with ________ is at risk for extinction.

An allele frequency is:

Despite causing a life-threatening disease, the sickle-cell allele in some areas of Africa has remained in high frequency in those populations because it protects against malaria. In the United States, malaria was eradicated shortly before World War II by eliminating the mosquito that spreads the disease. What is likely to happen to the frequency of the sickle-cell allele in African Americans living in the United States?

In a single family, the parents have brown eyes but all five of their children have green eyes. This is an example of evolution. True or False?

The use of antibiotics caused the mutation that produced MRSA. True or False?

Which trait is the BEST example of an adaptation?

Imagine a population of monkeys in South America whose habitat has been reduced to the point where only 20 individuals survive. This is an example of:

The Pennsylvania Amish have a very high frequency of an unusual allele that results in short arms and legs and extra fingers. This high frequency is thought to be the result of:

Organisms that have the greatest reproductive success are considered the most evolutionarily fit. True or False?

If the tallest and shortest individuals of a population of humans do not survive and reproduce as well as the individuals of "average" height, which type of selection would most likely result?

The 30,000 elephant seals alive today are genetically very similar due to:

From an evolutionary point of view, what important process occurs when a young male baboon leaves the troop that he was born in to join another troop?

Having greater evolutionary fitness means:

Which of the following can evolve?

The interaction of genes and environment produces a specific:

Evolution can be defined as change in ________ in a population.

In hamsters, the dominant allele B codes for a black coat and the recessive allele b codes for a brown coat. In the population shown in the figure above, what is the most frequent phenotype?

Based on the information shown in the figure, what do you predict the fourth generation will look like?

Which of the following can affect a small, endangered population so severely that it goes extinct?