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3. Is it possible for a recessive trait to be frequently expressed in a population? Why?
4. If a certain type of trait in a family or clan is considered by most people to be “better” or “ideal”, is it
possible to maintain the same type of trait in the succeeding generations? If so, how?
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- 1. Why do you think it is necessary for there to be variation in a population in order for evolution by natural selection to occur? 2. Why is it necessary for traits to be inherited for evolution to take place? 3. If a population is already well adapted to its environment, will most mutations be helpful or harmful? Explain.4. If a certain type of trait in a family or clan is considered by most people to be “better” or “ideal”, is itpossible to maintain the same type of trait in the succeeding generations? If so, how?1. Given that there's a science to back you up and you actually have the capability of producing an offspring with your desired traits, would you do it? What should the limitations be if you have to put a limit on this? 2. On the other hand, give some reasons why you will not choose to do it even if there's a science to back you up and you actually have the capability of producing an offspring with your desired traits.
- 1. The phenotype and genotype of a population is due to a "mosaic" of random and directed processes whereby some have to do with history and others related to adaption and other factors. Why is this so?If a population of skunks includes some individuals with stripes and others with spots, would you describe the variation as quantitative or qualitative?The good genes hypothesis is a theory that explains what? why more fit individuals are more likely to have more offspring why alleles that confer beneficial traits or behaviors are selected for by natural selection why some deleterious mutations are maintained in the population why individuals of one sex develop impressive ornamental traits
- Population genetics is the study of: how selective forces change the allele frequencies in a population over time the genetic basis of population-wide traits whether traits have a genetic basis the degree of inbreeding in a populationA population of mice is at HardyWeinberg equilibrium at a gene locus that controls fur color. The locus has two alleles, M and m. A genetic analysis of one population reveals that 60% of its gametes carry the M allele. What percentage of mice contains both the M and m alleles? a. 60% b. 48% c. 40% d. 36% e. 16%1. What kinds of limited resources can create a struggle between individuals in a population? 2. What kinds of variable traits within a population might natural selection act upon? Use a finch population as an example.
- 1.) Natural Selection: Of the three genotypes (AA, Aa, and aa), which of the three genotypes will be selected for under the current conditions? In other words, which of the three genotypes will increase in frequency? What if medical science were able to hold off the effects of AIDS for indefinite periods of time so that it became common for people with AIDS to live long enough and well enough to have children. What would this do to the frequency of the resistance allele and the incidence of AIDS? Support your answer. 2.) Even though anti-HIV drugs may prevent evolution towards resistance, can you justify not using anti-HIV drugs if they are available? Your response should consider scientific and ethical perspectives.2. You have sampled a population in which you know that the percentage of the homozygous recessive genotype (a) is 26%. Using that 26%, calculate the following: A. The frequency of the "aa" genotype. B. The frequency of the "a" allele. C. The frequency of the "A" allele. D. The frequencies of the genotypes "AA" and "Aa." E. The frequencies of the two possible phenotypes if "A" is completely dominant over "a1.Which among the following statements is INCORRECT? A.Phenotype is the pair of genes that carries the genetic makeup of an organism B.Homozygous is a combination of two dominant or two recessive allele C.A recessive allele must be received from both parents to bring about a recessive phenotype D.Heterozygous is a combination of one dominant allele and one recessive allele
