Overview of Evolution
This scientist is known for developing the theory of natural selection.
Who is Charles Darwin?
This type of evidence shows the physical remains or imprints of ancient organisms.
What are fossils?
This term describes the total collection of alleles in a population.
What is the gene pool?
This type of selection favors individuals with traits at one extreme of the spectrum, like large beaks in finches.
What is directional selection?
This event, which drastically reduces the size of a population, is an example of genetic drift.
What is a bottleneck effect?
The principle that species evolve through descent with modification is known as this.
What is the theory of evolution?
These structures, like the human arm and the bat wing, are considered evidence of common ancestry.
What are homologous structures?
The frequency of different alleles in a population is referred to as this.
What is allele frequency?
This type of selection increases the frequency of intermediate traits, such as medium-sized beaks in birds.
What is stabilizing selection?
When a small group of individuals colonizes a new area, this effect may cause reduced genetic diversity.
What is the founder effect?
The concept that all living organisms share a common ancestor was proposed in this book by Darwin.
What is "On the Origin of Species"?
This type of embryonic evidence shows that different species share similar developmental stages.
What is embryology?
The frequency of different genotypes in a population is referred to as this
What is genotype frequency?
When two opposite traits are favored, such as very small or very large beaks, it is called this.
What is disruptive selection?
In this type of population, genetic drift is more likely to have a significant effect.
What is a small population?
This concept describes the process where traits beneficial to survival become more common in a population
What is natural selection?
The study of genetic similarities and differences between species provides evidence for this process.
What is molecular biology?
This principle states that allele frequencies in a population will remain constant unless evolutionary forces are acting on the population.
What is Hardy-Weinberg equilibrium?
This phenomenon occurs when natural selection favors traits that improve an organism's ability to attract mates, such as bright plumage in peacocks.
What is sexual selection?
This term describes when an allele becomes fixed in a population purely due to chance, rather than natural selection.
What is genetic fixation?
The economist who thought that the population size of humans can only increase linearly even though our reproductive potential is exponential.
Who is Thomas Malthus?
Homologies that organisms possess that are remnants of their evolutionary ancestors, but serve no purpose to the organisms overall fitness.
The process of random assortment of genes during meiosis contributes to this type of genetic variation.
What is genetic recombination?
This phenomenon is observed when organisms of a heterozygous genotype have an advantage opposed to organisms of homozygous recessive or homozygous dominant.
What is heterozygote advantage?
This form of nonrandom mating occurs when individuals preferentially mate with others who are phenotypically close.
What is assortative mating?