explain how speciation, directional, disruptive, and stabilizing selection affect biodiversity.

Speciation is how a new kind of plant or animal species is created. … An example of speciation is the Galápagos finch. Different species of these birds live on different islands in the Galápagos archipelago, located in the Pacific Ocean off South America. The finches are isolated from one another by the ocean.

Why are vestigial structures not removed by natural selection?

Vestigial structures are not removed by natural selection because natural selection only acts on traits that impact reproductive success.

Which is an example of artificial selection Brainly?

The breeding of plants and animals for producing desirable traits, is called as Artificial selection. Examples : 1 ) Breeding of cows. 2) Breeding of ships.

Which best describes genetic drift apex?

Answer: Genetic drift is the random fluctuations in the gene frequencies within a population Eliminate. Explanation: … In this the variations occur in allelic frequency in a population thus determination of survival and reproduction of allele occurs.

Does disruptive selection increase heterozygosity?

Disruptive selection increases genetic variation by favoring alleles corresponding to more extreme phenotypes (Box 1 Figure Ic), resulting in a genetic polymorphism with heterozygote disadvantage.

Does stabilizing selection change the mean?

Stabilizing selection reduces the amount of variation in a trait. For example, very small and very large babies are most likely to die, leaving a narrower distribution of birthweights. Disruptive selection increases the amount of variation in a trait.

How should stabilizing selection and disruptive selection affect the magnitude of phenotypic variation from one generation to the next?

How should stabilizing selection and disruptive selection affect the magnitude of phenotypic variation from one generation to the next? … — because distruptive selection removes the intermediate phenotypes, it increases genetic and phenotypic variation within a population.

How is directional selection and artificial selection?

When artificial selection is imposed, the trait or traits being selected are known, whereas with natural selection they have to be inferred. In most circumstances and unless otherwise qualified, directional selection is applied, i.e., only high-scoring individuals are favored for a quantitative trait.