What is the only factor that can change allele frequencies in populations to produce adaptíve evolutionary change?

Q: Twenty snakes with the Aa genotype migrated to a population of 80 snakes of the same species with…

A: Hardy-Weinberg Equilibrium is a concept that serves as a benchmark for researchers to analyze gene…

Q: How does population size affect the likelihood of changes in allele frequencies by chance alone? Can…

A: Genetic drift refers to a mechanism of evolution by which the gene pool of a population changes…

Q: How is the optimal reproductive strategy of a species produced over time by Natural Selection…

A: Natural selection is a widely accepted theory proposed by Darwin that describes how the speciation…

Q: How can negative traits that don't show up until old age continue in populations? (Why aren't they…

A: Genetic disorders are those disorders that are caused by a defective gene or a Negative Trait, that…

Q: If a geographic barrier is removed and the two reunited populations intermingle and breed, what…

A: Biological species concept by Ernst Mayr states that the species are group of interbreeding natural…

Q: Why is variation in heritable traits essential to the evolution of a population

A: Genetic variation is a significant evolution force as it permits natural selection to increment or…

Q: The graphs to the left and right respectively refer to before and after selection. Which type of…

A: Introduction: Ecological selection is the natural selection of species that are more adapted to the…

Q: An hypothesis for the extinction of the dinosaurs is that the earth had been hit by a gigantic…

A: This type of gene frequency change is called Genetic Drift.

Q: If natural selection is the only force acting on this population from generation to generation, what…

A: Natural selection is the preferential survival and reproduction of individual because of variation…

Q: What is the intuitive meaning of the mean fitness of a population? How does its value change in…

A: A group of individuals of same species residing in same area is called as population, Natural…

Q: Which of the following is the degree of an organism’s adaptation to an environment, as measured by…

A: Adaptation  An evolutionary mechanism where organisms modify or change there internal or external…

Q: How can natural selection maintain harmful alleles in a population?

A: The process in which a population of living organisms adapts to their environment by certain changes…

Q: given that only some types of evolution involve selection of some genotypes with higher reproductive…

A: Over repeated generations, evolution is defined as a change in the heritable traits of biological…

Q: Populations evolve by means of natural selection Group of answer choices True False   Population…

A: Evolution is a charecteristic change in the in species which take place over several generation time…

Q: Which microevolutionary force leads to adaptive changes in allele frequencies?

A: There are few evolutionary forces which changes the allele in population Mutation -  abbreviation…

Q: How does natural selection change allele frequencies in populations? A. Natural selection controls…

A: Natural selection is one process of evolution. According to this process, some traits are naturally…

Q: Which mechanisms of evolution cause random changes in allelefrequencies? Which cause nonrandom…

A: There are four types of method which changes its frequency Gentic drift Mutation Natural selection…

Q: Which of the evolutionary processes discussed in the material presented can introduce genetic…

A: Natural selection: it states that only those organisms who are fit according to the environmental…

Q: A population that is in Hardy-Weinberg equilibrium does not experience any migration. How does this…

A: Answer: HARDY WEINBERG EQUILIBRIUM= It is the principle stating that the genetic variation in a…

Q: If allele frequencies do not change from one generation to the next, is the population definitely in…

A: Genes control the genetic characteristics of an organism.  Genotype is the genetic characteristics…

Q: In the experiment of genetic drift, suppose you have a population of 150 butterflies, but a wildfire…

A: Ecology is the study of the associations among living organisms and their physical environment.A…

Q: Given that genetic drift is the only evolutionary force acting on these populations, which of the…

A: Genetic drift  It is a process of evolution where the frequency of allele of a population over time.…

Q: How does H-W Equilibrium and Natural Selection fit within the scope of Population Genetics?

A: Population genetics is a subfield of genetics that deals with the genetic differences within the…

Q: What is meant by allelic frequency of a population?

A: "Since you have asked multiple questions, according to our guidelines we are eligible to answer only…

Q: Modern evolutionary theory now shows exception to Charles Darwins' proposal that populations show…

A: False Darwin defined evolution as "descent with modification," the idea that species change over…

Q: Does inbreeding affect allele frequencies? Why or why not? How does it affect genotype frequencies?…

A: Inbreeding is the process of offspring production from the mating or breeding of individuals or…

Q: How would you expect a population to evolve differently in a complex, "patchy" (small, isolated and…

A: This is the answer to the first part of the question only. For the second part you have to post the…

Q: Under what scenaries is genetic drift most potent as an evolutionary process? how do factors like…

A: Genetic drift is the change in frequency of alleles  from one generation to another, which occur due…

Q: An allele with no effect on fitness arises in a population through mutation and increases in…

A: *Natural selection is process in which populations of living organisms will adapt and changes which…

Q: Of the ways that populations can evolve over time, is the only mechanism in which the environment…

A: The modern theory of organic evolution or neo-Darwinism is the most accepted theory of organic…

Q: One possible definition of evolution is that evolution can be seen as the change of allele…

A: Evolution is the modification in successive generations with time from preexisting species to the…

Q: The four main forces of evolution are mutation, genetic drift, gene flow, and natural selection.…

A: Mutation : A mutation occurs when a DNA gene is damaged or changed in such a way as to alter the…

Q: What is the most important mechanism that produces adaptive evolution?

A: The course of evolution through which organisms lose the characteristics or traits or some organs…

Q: In general, what is the effect of complete selection, migration and random genetic drift on the gene…

A: The fraction or proportion of a population that bears an allele (i.e., one kind of gene variant) at…

Q: Which type of natural selection is involved in sympatric speciation? Group of answer choices A.…

A: Sympatric speciation is the evolution of a new species from the surviving ancestral species. Both…

Q: In what way is diversity intrinsically valuable to a population? How is genotypic or phenotypic…

A: Genetic diversity refers to the total number of genetic features in a species' genetic composition;…

Q: Explain What is genetic drift? What is a founder? Are these important in large populations or in…

A: In population genetics, evolution is defined as a change in the frequency of alleles (gene variants)…

Q: What causes allele frequencies to differ between biological populations?

A: Allele  frequency  Allelic frequency can be defined as relative frequency of an allele at a…

Q: If gene A/a is not in Hardy-Weinberg equilibrium due to natural selection such that individuals with…

A: The relative fitness is the reproduction or survival rate of a particular genotype with respect to…

Q: The trait that natural selection “selects for” is lifetime Darwinian fitness.  If relative matching…

A: The peppered moth is the most intensely studied species of moth during the industrial revolution in…

Q: The trait that natural selection “selects for” is lifetime Darwinian fitness.  If relative matching…

A: The peppered moth's melanism was an early test of Charles Darwin's characteristic determination in…

Q: How thus different mechanisms of evolution can produce change in populations and can contribute to…

A: Evolution is a process in which there is change in characteristics of a species over generations.…

Q: fitness

A: Evolution is the change in the characteristics of a species over several generations and relies on…

Q: According to the principle of Hardy-Weinberg, which of the following will NOT change the frequencies…

A: Hardy Weinberg equilibrium is a imaginary which considers if there is no evolution then the…

Q: Which of the following statements most accurately describes the effects of genetic drift on a…

A: Genetic drift is the change in the allele frequencies in a population as a result of the sampling…

Q: In a population, with time the frequency of some alleles/genotypes decreases" describes... Group of…

A: Evolution is defined as the change in characteristics of an organism over a period of time.

Environmental health and hazards

An organism's environment is the environment in which it lives and has an impact on its well-being. The World Health Organization (WHO) defines environmental health as "those aspects of public health, such as quality of life, that are influenced by physical, chemical, biological, social, and psychosocial components in the environment." Environmental health is concerned with both natural and man-made settings in order to enhance public health. Environmental science, occupational medicine, toxicology, and epidemiology are the key subdisciplines of environmental health.