final biology test!!!!

What is natural selection?

Natural selection is the process by which organisms that are better adapted or fit to their environment are more likely to survive and reproduce.

What is gene flow?

Gene flow is the movement of alleles in and out of a population due to migration, which increases genetic variation.

What is genetic drift?

Genetic drift is the change in the composition of a gene pool as a result of a random event.

What is the bottleneck effect?

The bottleneck effect occurs when a population experiences a sudden decline and is subsequently repopulated by a small group of survivors.

What is the founders effect?

The founders effect occurs when a group from the original population leaves and establishes a new population.

What are mutations?

Mutations are random changes in the genetic composition of an organism due to alterations in the DNA base sequence.

How do mutations affect variation?

Mutations create variation in a population.

What happens to unfavorable mutations?

Unfavorable mutations are selected against.

What is the relationship between reproduction and mutation?

Reproduction and mutation occur simultaneously, with favorable mutations being more likely to survive and reproduce.

What is the Hardy-Weinberg equation?

The Hardy-Weinberg equation is represented as $p^2 + 2pq + q^2 = 1$ and is used to calculate allele and genotype frequencies in a population.

What do the variables p and q represent?

In the equation, $p$ represents the frequency of the dominant allele (A) and $q$ represents the frequency of the recessive allele (a). They sum to 1, so $p + q = 1$.

How do you calculate the frequency of the dominant allele (A)?

The frequency of the dominant allele (A) is represented by $p$.

How do you calculate the frequency of the recessive allele (a)?

The frequency of the recessive allele (a) is represented by $q$.

How do you calculate the frequency of the homozygous dominant genotype (AA)?

The frequency of the homozygous dominant genotype (AA) is given by $p^2$.

How do you calculate the frequency of the homozygous recessive genotype (aa)?

The frequency of the homozygous recessive genotype (aa) is given by $q^2$.

How do you calculate the frequency of the heterozygous genotype (Aa)?

The frequency of the heterozygous genotype (Aa) is given

What is speciation?

Speciation is the process by which new species are created through genetic adaptation, isolation, and separation.

What is allopatric speciation?

Allopatric speciation is the process of speciation that occurs when populations are geographically isolated by physical barriers, leading to the development of new species.

What is sympatric speciation?

Sympatric speciation occurs when new species arise from populations that are not geographically isolated, often due to behavioral differences or reproductive barriers.

What is disruptive selection

Disruptive selection occurs when both extreme phenotypes are favored over the intermediate phenotype, leading to increased variation within a population.

what is directional selection

Directional selection is a process in evolutionary biology where one extreme phenotype is favored over others, resulting in a shift in the population's trait distribution.

what is stabilizing selection

Stabilizing selection is an evolutionary process that favors average phenotypes and acts against extreme variations, thereby reducing variability in a population.