What is the frequency of the recessive genotype?
The frequency of the recessive allele in the population. Answer: We know from the above that q2 is 1/2,500 or 0.0004. Therefore, q is the square root, or 0.02. That is the answer to our first question: the frequency of the cystic fibrosis (recessive) allele in the population is 0.02 (or 2%).
What is the frequency of the cystic fibrosis allele in the Caucasian population?
For example, the allele frequency of the mutant cystic fibrosis allele among Caucasians is 0.025, while the frequency of the normal allele is 0.975.
What is the frequency of the homozygous recessive genotype q2 )?
0.09
Is CF inherited recessive or dominant?
Cystic fibrosis is an example of a recessive disease. That means a person must have a mutation in both copies of the CFTR gene to have CF.
What does Q represent in Hardy Weinberg?
In the equation, p2 represents the frequency of the homozygous genotype AA, q2 represents the frequency of the homozygous genotype aa, and 2pq represents the frequency of the heterozygous genotype Aa.
Why is the Hardy-Weinberg model useful?
Importance: The Hardy-Weinberg model enables us to compare a population’s actual genetic structure over time with the genetic structure we would expect if the population were in Hardy-Weinberg equilibrium (i.e., not evolving).
How does Hardy-Weinberg show evolution?
The Hardy-Weinberg equilibrium principle describes the unchanging frequency of alleles and genotypes in a stable, idealized population. In the absence of these evolutionary forces, the population would reach an equilibrium in one generation and maintain that equilibrium over successive generations.
Does evolution always yield a superior population?
Evolution results in progress; organisms are always getting better through evolution. Evolution only occurs slowly and gradually. Because evolution is slow, humans cannot influence it. Genetic drift only occurs in small populations.
Does evolution mean that organisms are becoming progressively better with each generation?
Evolutionary theory implies that life evolved (and continues to evolve) randomly, or by chance. Evolution results in progress; organisms are always getting better through evolution. Individual organisms can evolve during a single lifespan. Evolution only occurs slowly and gradually.
Can evolution be observed?
Evolution can be observed and has been proven. There are some small changes affecting the fitness of populations or species that can happen in one generation and can therefore be observed in a human lifetime.
Why can Evolution act only on population and not in individuals?
Populations evolve, not individuals. Individual organisms do not evolve, they retain the same genes throughout their life. When a population is evolving, the ratio of different genetic types is changing — each individual organism within a population does not change.
Is evolution just a theory that remains unproven?
A scientific theory stands until proven wrong — it is never proven correct. The Darwinian theory of evolution has withstood the test of time and thousands of scientific experiments; nothing has disproved it since Darwin first proposed it more than 150 years ago.
Why is survival of the fittest misleading?
While the phrase “survival of the fittest” is often used to mean “natural selection”, it is avoided by modern biologists, because the phrase can be misleading. For example, survival is only one aspect of selection, and not always the most important.
What are the 5 conditions that will result in the evolution of a population?
Genetic Variation in Populations A single individual cannot evolve alone; evolution is the process of changing the gene frequencies within a gene pool. Five forces can cause genetic variation and evolution in a population: mutations, natural selection, genetic drift, genetic hitchhiking, and gene flow.
What agents can cause evolution in a population?
The Hardy-Weinberg equilibrium principle says that allele frequencies in a population will remain constant in the absence of the four factors that could change them. Those factors are natural selection, mutation, genetic drift, and migration (gene flow).
Is evolution of man a theory?
Human evolution is the lengthy process of change by which people originated from apelike ancestors. Scientific evidence shows that the physical and behavioral traits shared by all people originated from apelike ancestors and evolved over a period of approximately six million years.