in which type of model do alleles from one population eventually replace alleles in another popu

Name: in which type of model do alleles from one population eventually replace alleles in another population 21029
Uploaded: 2023-04-10T17:45:34-08:00
Duration: 2 min 12 s
Channel: Madhur L
Description: in which type of model do alleles from one population eventually replace alleles in another population 21029

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when are two populations likely to have very similar allele frequencies

Madhur L.

You have a cup of beans in front of you with 20 white beans and 24 red beans. These beans represent the alleles for a simple Mendelian trait, where red is dominant (R) and white is recessive (r). In 1997, a self-isolated group of people living on a small island was joined by a group of explorers from a nearby island. STEP 1. Create the original, self-isolated population. The self-isolated population consists of six males. Three of them are homozygous recessive, two are heterozygous, and one is homozygous dominant. Pull out the appropriate genotypes and set them in front of you. Answer the following two questions about this self-isolated population. How many recessive alleles are present in this self-isolated population? 5 How many dominant alleles are present in this self-isolated population? 8 STEP 2. Create the explorer population, keeping the males and females separate. The explorer population consists of two males and eight females, all of whom are homozygous dominant for the same Mendelian trait. Answer the following two questions about this explorer population. How many recessive alleles are present in this explorer population? 0 How many dominant alleles are present in this explorer population? 20 STEP 3. Create the descendant population. Everyone on the island found their perfect mate and decided to have two children. Being sure to keep the male and female alleles separate, mix up the male alleles together, and mix up the female alleles together. Create the next generation by taking one allele from the males and combining it with one allele from the females until 16 new individuals (pairs of alleles) are sitting in front of you. Record their genotypes in the table. Answer the remaining questions in this exercise about this descendant population. How many recessive alleles are present in this descendant population? 8 How does this vary from the number of recessive alleles present in the explorer population? The number of recessive alleles has increased How many dominant alleles are present in the descendant population? 32 How does this vary from the number of dominant alleles in the original, self-isolated population? The number of dominant alleles has increased What long-term effects can gene flow have on any two populations that are exchanging genes? All of these It can introduce previously unknown genetic material It can make two populations more similar to one another It can shift allele frequencies

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In a population exposed to selective pressure, is it possible to completely lose a recessive. allele from a population

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Transcript

00:01 Hello everyone, in this question we have to write the conditions under which two populations can have same allele frequency.

00:11 So, allele frequencies in two populations can be same under the given conditions.

00:33 First of all, they are not isolated from each other and are randomly meeting with respective member or species.

01:09 Now, secondly, if there is no migration or mutation...

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In which type of model do alleles from one population eventually replace alleles in another population?

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In which type of model do alleles from one population eventually replace alleles in another population?

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