How can gene flow impact a population's allele frequencies? Choose one of the following: By causing mutations in the DNA   By introducing new alleles through migration   By wiping out a large proportion of the population

What is gene flow defined as? Group of answer choices A-production of new alleles B-chance loss of alleles in a population C-exchange of genes between populations D-production of new genetic material E-differential reproductive success of individuals

A mutation produces a new beneficial dominant allele.  Which of the following statements is false when considering the rate of frequency change that will be observed for this allele in the population? a) The allele will initially be present in heterozygotes. b) It is less likely to reach frequency of 1.0 than if it had been recessive. c) Its frequency will increase slowly until homozygotes occur in the population. d) Individuals with this allele will express the favorable phenotype.

Which one of the following statements best describes the difference between mutation and substitution in a population? Mutation is the origin of a new allele in an individual organism, and substitution is the evolutionary replacement of one allele by another. Mutation is the origin of a deleterious allele, and substitution is the increase in frequency of an advantageous allele by positive selection. Mutation is change in the DNA sequence within a functional gene, and substitution involves nucleotide changes in noncoding regions of the genome.

Gene flow often increases genetic diversity of populations that come together. Which of these is an example of when gene flow could reduce genetic diversity if two populations (Population A and Population B) come together? O The offspring with parents from population A and B have low survival because they are not adapted to the environment. O Individuals from population A have an allele that is not found in population B. O Individuals from population B have an allele that is not found in population B O Population A only has homozygous recessive alleles and population B only has homozygous dominant alleles.

In a population of yellow mushrooms, a mutation resulted in a new purple type of mushroom that herbivores avoided. Because herbivores avoided the purple mushrooms, they were able to spread more spores and increased to make up 1% of the population. In one year, however, flash flood killed all of the purple mushrooms in the population, leaving only a few yellow mushrooms alive. Identify which evolutionary mechanism was responsible for the fixation of the yellow mushroom genotype in this population. Select one: a. Mutation b. Genetic drift c. Non-random mating Ⓒd. Natural selection * Gene flow e.

Consider the first copy of an allele for insecticideresistance that arises by mutation in a populationof insects exposed to an insecticide. Is this mutation an adaptation? If, after some generations,we find that most of the population is resistant,is the resistance an adaptation? If we discovergenetic variation for insecticide resistance in apopulation that has had no experience of insecticides, is the variation an adaptation? If an insectpopulation is polymorphic for two alleles, eachof which confers resistance against one of twopesticides that are alternately applied, is thevariation an adaptation? Or is each of the tworesistance traits an adaptation?

Consider a recessive condition where 40% of the affected individuals pass away by the age of 10 but those that survive to adulthood are just as likely to have children as the general population. What must the new mutation rate be if the incidence of the disorder is 1/10,000 to maintain a consistent incidence across generations? Answer format: Fraction - #/#

Imagine a huge population with a gene that has ten functionally equivalent, neutral alleles. a small but genetically representative group of individuals from the population is transported to an island, forming a small population. what will likely happen over time and why?

5) This chart shows the fur colors of a population of rabbits in the Great Smoky Mountains. A mutation introduces an allele for white fur. Based on the data, what do you predict will happen in the next 20 years? Select ALL that apply. Not Graded A) Those with white fur will slowly increase over the next 20 years.     B) Those with mottled fur and brown fur will continue to exist in the population.     C) Those with white fur will continue to decrease or even die out of the population.     D) Mottled fur is the dominant trait so it will continue to increase in the population.     E) Unless the environment changes, those with mottled fur will continue to increase in number.