Exam 12: Forces of Evolutionary Change

Babies that are at a low birth weight are more likely to have health problems,while women will have difficulty delivering babies with high birth weight.Together this leads to ______ for babies of average birth weight.

Darwin made which observation while on his four-year voyage on the HMS Beagle?

In the section "Investigating Life: Size Matters in Fishing Frenzy",a fish that eats other fish that in turn eat algae is a

The chance that a mutation will occur is independent of whether a new phenotype will benefit a population.

In the section "Investigating Life: Size Matters in Fishing Frenzy",what did the researchers conclude from the figure?

Sexually dimorphic features do not include

A male peacock has enormous tail feathers that it uses in mating displays to attract females.While the tail feathers are an advantage in mating,what is the potential disadvantage of these feathers to the male?

Darwin believed that because of "differential reproductive success" a population would change over time.

Natural selection is random because no individuals are eliminated from reproducing due to different environments.

If an environment changes rapidly,organisms with ____ will be more likely to survive and reproduce.

In the section "Investigating Life: Size Matters in Fishing Frenzy",what was the dependent variable in the figure part a?

In the Hardy-Weinberg equation,p + q = 1,p and q represent the frequency of alleles in a population of diploid organisms if

Alleles conferring red plumage to cardinal males are common because red plumage

In the section "Investigating Life: Size Matters in Fishing Frenzy",the heritability of body size was 20% regulated by the environment (and 80% controlled by genes)in Atlantic silversides.What would happen to the figure if heritability was 80% regulated by the environment (and 20% regulated by genes)?

Hardy-Weinberg equilibrium will not occur in a population in which

Darwin obtained which of the following in the Essay on the Principle of Population by Malthus?

Use the Hardy-Weinberg equations: p + q = 1 and p² + 2pq + q² = 1.If the dominant allele frequency is 0.8,then what percent of the population will be homozygous dominant?

The bottleneck effect

"Survival of the fittest" refers to

Individuals whose red blood cells are the correct shape and are able to resist malaria have a better chance of reaching reproductive age.This is known as