Rarefaction is used for which of the following?

Biology

2 answers:

zheka24 [161]4 years ago

4 0

Answer:

Rarefaction is used for

a. Creating a representative sample is correct

Explanation:

Rarefaction is a method which is used to find the species richness by sampling. Rarefaction finds out the number of species present in the ecological community with the help of the rarefaction curve.

This Rarefaction curve is based on the number of species and the number of an individual sample.The curve size will increase first because the common species are detected after that curve will become plateau because only rarest species are there for the sampling.

ratelena [41]4 years ago

3 0

Rarefaction in terms of ecology can be defined as a technique used to assess species richness from the results of sampling.

It allows the calculation of richness of a particular species for a given number of individual samples, and these are based on the construction of rarefaction curves.

Hence, the correct answer is: option A-Creating a representative sample

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Two frog populations (same species) living in two neighboring lakes sing slightly different courtship songs. Increased irrigatio

dedylja [7]

Answer:

C. The songs will become more similar to each other.

Explanation:

To answer this question, first, you need to remember that both populations belong to the same species, so they can mate because there is no reproductive barrier. The only limiting physical factor impeding individuals of both groups to cross was the piece of land before the land got wetter. So once populations got together, individuals can easily mate.

One population´s males exhibit a courtship song that slightly differs from the one of the other group. This difference has a genetic basis. But females hardly notice the difference. All of them prefer loud frogs to quieter frogs, independently of the population to which they belong.

So when the two populations get together, individuals get mixed. Females do not recognize males of their group, and during the breeding season, all females will mate the most with louder males of any of the population. So females from population A might mate with males from population B, and females from population B might mate with males from population A. So after mating season, there is also a genetic mixture between populations.

The new generations will carry elements of both genotypes. So males´ songs will be even more similar to each other. Songs will become more similar to each other because individuals of both populations are mixed and mated, and their genes intercrossed, producing new individuals with genes of both populations.