Exam 20: Genes Within Populations

Reproductive success of an individual is known as:

The disease, sickle-cell anemia is common in malaria-infested areas because individuals that are heterozygous for the gene (AS) have enhanced resistance to malaria over normal individuals (AA).Individuals with severe sickle-cell anemia (SS) usually die before reproduction.If this population moves to an area without malaria, what will happen to the allele frequency of the A allele over time?

Female cardinals select male mates in part based on their bright red color.What effect would this have on a cardinal population that was in Hardy-Weinberg equilibrium?

Two parents who do not have sickle cell anemia have a child that has the disease.The parents are both:

For a gene with two alternative alleles, A (with a frequency of p) and B (with a frequency of q), the term in the algebraic form of the Hardy-Weinberg equilibrium for the heterozygote genotype frequency is

Hardy-Weinberg pointed out that the original proportions of the genotypes in a population would remain constant from generation to generation if certain assumptions are met.Which one of the following is not a Hardy-Weinberg condition?

In the graph above, which baby characteristics would explain the percent infant mortality curve and any subsequent effects on fitness?

Gene flow, defined as the movement of genes from one population to another, can take place by migration, as well as

In the experiment above, guppy color patterns (spots) were measured in populations exposed to increasing amounts of predation.From this you could conclude that ____ .

People homozygous for the sickle-cell anemia allele develop a life threatening disease, while those homozygous for the normal allele are at the highest risk of dying from malaria.Carriers have some resistance to malaria, but do not develop sickle cell anemia.This is an example of ____

Animals that select mates that are phenotypically similar will have _____ when compared with Hardy-Weinberg predictions.

In a forest, trees that get more sunlight grow taller than other nearby trees.This is a form of ______

An island is on the migration route of sea birds.This island also has abundant tree nesting birds that live on the island permanently and are not found on any other island.The tree nesting birds are more likely than the sea birds to be in Hardy-Weinberg equilibrium because:

______ could not be involved in gene flow.

In order for natural selection to occur within a population, certain conditions must be met.One such condition is

In a small population of cockroaches living in your kitchen, only a few roaches mate in one year.This can lead to random changes in allele frequency in the population through ______

Antigens on red blood cells are hereditary traits that allow blood to be typed in different ways.One system is based on a gene with two alleles, M and N.If the frequency of the M allele in a population is 0.4, then according to the Hardy-Weinberg rule, the expected frequency of the heterozygous MN genotype is ___.

In the Hardy-Weinberg equation, p and q are _____.

Moths that can evade a bat's echolocation have _____ that increase their likelihood of survival and reproduction.

In the graph above, how can the change in infant mortality be explained as birth weight increases from 2 to 7 pounds?