Answers
Frequency of dominant allele: 0.99
Frequency of recessive allele: 0.01
% homozygous dominant: 98.01%
% homozygous recessive: 0.01%
% heterozygous: 1.98%
What is Hardy -Weinberg equation?The Hardy-Weinberg equation is a mathematical model that describes the relationship between the frequencies of alleles and genotypes in a population. It is based on the assumptions of a large population size, random mating, no migration, no mutation, and no natural selection.
The equation is:
p² + 2pq + q² = 1
where:
p = frequency of the dominant allele
q = frequency of the recessive allele
p² = frequency of the homozygous dominant genotype
q² = frequency of the homozygous recessive genotype
2pq = frequency of the heterozygous genotype.
Given that cystic fibrosis is a homozygous recessive condition that affects 1 in 10,000 of the Hispanic population in the US, we can assume that the frequency of the recessive allele is q = √(1/10000) = 0.01.
To calculate the frequency of the dominant allele, we can use p = 1 - q = 1 - 0.01 = 0.99.
Now we can use the Hardy-Weinberg equation to calculate the frequencies of the different genotypes:
p² = (0.99)² = 0.9801 = 98.01% homozygous dominant
2pq = 2(0.99)(0.01) = 0.0198 = 1.98% heterozygous
q² = (0.01)² = 0.0001 = 0.01% homozygous recessive
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Related Questions
A research team has genetically engineered a strain of fruit flies to eliminate errors during DNA replication. The team claims that this will eliminate genetic variation in the engineered flies. A second research team claims that eliminating errors during DNA replication will not entirely eliminate genetic variation in the engineered flies
(a)Provide ONE piece of evidence that would indicate new genetic variation has occurred in the engineered flies.
Answers
New phenotypes provides a piece of evidence that new genetic variation occurs in engineered fruit flies.
In genetics, a phenotype is a set of observable features or characteristics of an organism. The term covers an organism's morphology (physical form and structure), developmental processes, biochemical and physiological characteristics, behavior and products of behavior. The phenotype of an organism is produced by two fundamental factors: the expression of the organism's genetic code (its genotype) and the influence of environmental factors. These two factors may interact to further influence the phenotype. When two or more distinct phenotypes exist within the same population of a species, the species is said to be polymorphic.
A well-documented example of polymorphism is the color of the Labrador Retriever; while coat color depends on many genes, yellow, black, and brown can be clearly seen in the environment. In 1978 and again in his 1982 book The Extended Phenotype, Richard Dawkins proposed that bird's nests and other architectural structures such as stone silkworm larvae and beaver ponds) are considered as "extended phenotypes".
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How does water flow?
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fill in the blank. to create a dopamine deficient (dd) mouse that retains the ability to produce ne, the gene for___is selectively restored in noradrenergicc neurons
Answers
To create a dopamine deficient (dd) mouse that retains the ability to produce ne, the gene for dopamine beta-hydroxylase (DBH) is selectively restored in noradrenergic neurons.
DBH is an enzyme that converts dopamine to norepinephrine (ne), and its expression is critical for the production of ne. By restoring DBH expression specifically in noradrenergic neurons, researchers can create a mouse that lacks dopamine but still produces ne.
This can be a useful tool for studying the effects of dopamine deficiency on behavior, as well as the specific roles of dopamine and ne in various physiological processes. Additionally, this technique could potentially be used to develop new treatments for disorders that involve abnormalities in dopamine or ne signaling, such as Parkinson's disease or depression.
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using the chart below, explain which organism is most closely related to the human and why? which is most distantly related and why?
Answers
You can see from the chart below that the first species is in the animal kingdom while the other three are in the plant world. Just below the level of domains, the kingdom is a very high degree of categorization.
As a result, creatures from various kingdoms have relatively little in common. Sponge species are our most distant cousins according to the conventional animal tree of life. Like our non-animal ancestors (such as fungi), sponges are structurally basic creatures that lack many sophisticated animal characteristics including a nervous system, muscles, and a through-gut.
The gorillas, chimpanzees, and orangutans are the big apes that resemble humans the most physically. Yet, DNA testing has revealed that the chimpanzees are our closest living cousins; 95% of our DNA is the same.
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Correct Question:
Using the chart below, explain which organism is most closely related to the human and why? which is most distantly related and why?
