Exam 4: Genes and Their Evolution: Population Genetics

Fitness trade-off refers to selection favoring which genotype?

The physical location of a gene within the genome is called the:

What effect does natural selection have on population variation?

Australian aborigines are an endogamous society.This means that marriage and reproduction take place within the group, leading to:

When individuals of the same species are reproductively isolated, genetic differences may accumulate in sufficient number so that new species could emerge.Such an event would be an example of:

A point mutation that does NOT result in a change to the amino acid coded for is said to be a _______ mutation.

Which of the following is NOT a genetic disorder that decreases susceptibility to malaria?

A study of Galapagos finches after a long period of drought found that all species of finch on one of the islands had wide beaks well adapted to breaking open seeds.The type of evolution that leads to this phenotype distribution is _______ selection.

You are reading a scientific article about cheetahs that have stripes instead of spots.The article refers to this as a genetic mutation.Though you see they have no negative impact on the cheetahs' fitness, the stripes are nevertheless considered a genetic mutation because mutations:

Over a period of two generations, the frequency of green dung beetles in a population shifts from 75% to 71% while the frequency of brown dung beetles within this population shifts from 25% to 29%.This is an example of:

Frameshift mutations are more likely to have an impact at the phenotypic level because they:

The ABO and MN blood-type frequencies of the Dunkers differ significantly from those of current American and German populations due to:

Another name for the evolutionary force called gene flow is:

Spontaneous mutation is the result of:

The clinal decrease in type B blood from East Asia to Western Europe is probably the result of:

The mutation known as trisomy 21, in which an extra copy of chromosome 21 is present, is more commonly known as _______ syndrome.

Mutations in DNA found in which cells are most likely to have significant evolutionary consequences?

The type of selection that favored progressively larger brain size in human evolution is _______ selection.

While conducting research with a small population in South America you note that an overwhelming majority of individuals exhibit signs of a specific genetic abnormality.This is most likely the result of:

Together, all of the alleles contained within a group of interbreeding individuals are known as a: