A human population has a higher than usual percentage of...

Name: Problem 2, Chapter 16: Biology
Uploaded: 2019-08-05T21:03:06-08:00
Duration: 3 min 45 s
Channel: Justin Im
Description: A human population has a higher than usual percentage of individuals with a genetic disorder. The most likely explanation is a. mutations and gene flow. b. mutations and natural selection. c. nonrandom mating and founder effect. d. nonrandom mating and gene flow. e. All of these are correct

A human population has a higher than usual percentage of individuals with a genetic disorder. The most likely explanation is a. mutations and gene flow. b. mutations and natural selection. c. nonrandom mating and founder effect. d. nonrandom mating and gene flow. e. All of these are correct

A human population has a higher than usual percentage of individuals with a genetic disorder. The most likely explanation is
a. mutations and gene flow.
b. mutations and natural selection.
c. nonrandom mating and founder effect.
d. nonrandom mating and gene flow.
e. All of these are correct

Key Concepts

Genetic Disorder

A genetic disorder is a disease or condition that results from abnormalities in an individual's DNA. These abnormalities can be inherited or arise spontaneously, and they can affect the body's structure or function. In the context of population genetics, certain mating patterns and historical population events like the founder effect can influence the prevalence of these disorders.

Nonrandom Mating

Nonrandom mating refers to the pattern of individuals selecting partners based on certain traits or genetic similarities rather than by chance. This can increase the frequency of specific alleles within a population, leading to higher incidences of genetically linked traits or disorders, especially if individuals with similar genetic predispositions are more likely to reproduce together.

Founder Effect

The founder effect is a form of genetic drift that occurs when a new population is established by a very small number of individuals from a larger population. Because the new population's gene pool may not represent the genetic diversity of the original population, rare alleles—including those that might cause genetic disorders—can become disproportionately common, leading to a higher incidence of such disorders.

Transcript

00:01 Human population has a higher than usual percentage of individuals with a genetic disorder and asks us to explain this phenomenon.

00:06 So let's just go down to wisnesty, which statements can account for a population having such an having a genetic disorder, which is obviously unbearable.

00:16 So aces and mutations and then gene.

00:19 So one, mutations are pretty rare.

00:23 So it wouldn't really why we would have a higher percentage of individual genetic disorder.

00:30 It's pretty constant among human species, although there are obviously environmental factors, but they are quite rare, and they wouldn't significantly affect the genotype frequency.

00:39 And gene flow.

00:40 So gene flow is the exchange of alleles between two members of a population.

00:47 So let's say this is a population that we are talking about, and it is exchanging genes.

00:53 So basically individuals between both populations are meeting with each other.

00:55 That wouldn't specifically explain why there is an increased genotype frequency of individuals with a genetic disorder.

01:07 There is an exchange and allele frequencies will change, but it won't significantly affect, it wouldn't drastically affect the individuals who have a genetic disorder.

01:16 It wouldn't have that much of an impact in terms of individuals with a genetic disorder, increased number of individuals.

01:24 B states mutations and natural selection.

01:27 So natural selection are selecting for organisms that have, you know, these strong or healthy, quote -unquote, genes.

01:35 So it is favorable.

01:36 They're favorable.

01:37 So if you have a genetic disorder, you're likely not going to be selected for by natural selection.

01:43 So natural selection would be incorrect.

01:45 C states non -random mating...