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Theory of Evolution-
| Question | Answer |
|---|---|
| What is the movement of genes into and out of a gene pool called? | gene flow |
| Which of the following is not a factor that causes changes in the allelic frequencies of individuals in a population? | random selection |
| Natural processes such as speciation and gradualism provide the genetic basis for _____. | evolution |
| Natural selection can best be defined as the _____. | survival and reproduction of the organisms that are genetically best adapted to the environment |
| Why might the beak of the Akialoa developed this way? | to reach nectar in flowers |
| Which of the following lines of evidence for evolution is indirect? | fossils |
| The synthetic theory of evolution is based at least in part on: | an acceptance of natural selection as a cause of evolution |
| "The sum total of the genetically inherited changes in the individuals who are members of a population" is a description of: | evolution |
| Godfrey Hardy and Wilhelm Weinberg concluded that gene pool frequencies are: | inherently stable |
| Which of the following statements is true of the Hardy-Weinberg equation (p² + 2pq + q²= 1)? | The equation allows you to discover the genotype frequencies if you know the phenotype frequencies. |
| Population geneticists now usually think of evolution as being genetic changes in: | populations |
| The Hardy-Weinberg equilibrium equation (p²+ 2pq + q² = 1) allows geneticists to: | keep track of changes in genotype frequencies from generation to generation in a population |
| Population genetics and the synthetic theory of evolution were developed mostly in the _____ century. | 20th |
| "Synthetic theory of evolution" refers to: | a combination of Charles Darwin's concept of natural selection along with evolutionary theories developed in the 20th century by population geneticists and molecular biologists |
| Which of the following conditions can result in evolution in a population? | none of the above |
| Which of the following statements is true? | Evolution is a common occurrence in natural populations |
| 'Which of the following is most characteristic of a dominant gene?' | It masks the effects of other alleles. |
| Which trait is most likely governed by a single gene? | Sickle-cell anemia. |
| If a plant that is heterozygous for tallness (Tt) is crossed with a homozygous tall plant (TT), which could not be among the offspring | A tt plant. |
| Which of the following is not a prerequisite for natural selection's operation? | An innate desire to change. |
| Which statement best characterizes natural selection? | The slow accumulation of adaptive mutations. |
| Which statement is true of artificial selection? | It is essentially the same process as natural selection. |
| What is continued artificial selection's usual effect on genetic diversity? | It leads to the creation of genetically homogeneous populations. |
| What type of molecule had to be formed on earth in order for life to evolve? | A self-replicating molecule. |
| Which best describes the theory of punctuated equilibrium? | Species generally remain stable but this stasis is occasionally interrupted by rapid evolutionary change |