Select the three conditions necessary for natural selection. (select 3) heritability variation competition leading to differential reproductive success environment choas industrialization
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Select the three conditions necessary for natural selection. (select 3)
heritability |
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variation |
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competition leading to differential reproductive success |
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environment choas |
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industrialization |
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- Which of these outcomes are examples of reproductive isolation? Select all that apply. Individuals of different species are physically compatible and can engage in sex Hybrid individuals cannot produce offspring Hybrid individuals or their offspring have similar fitness to the original species Reproduction occurs at different times Mating occurs but fertilization does not occurWhich of the following is not a characteristic of r-selected species. O mature early O mature late O more offspring O smaller offspringThe Fischer model of the 1:1 sex ratio predicts that natural selection favors parents who produce offspring of the underrepresented sex in the population. True False
- Imagine that you are a conservation biologist responsible for the well-being of a bufello herd consistingof 100 mature males and 100 mature females. In this herd, there is no appreciable mutation, there isno migration in or out, and there is no selection. At the Fuzzy gene locus, there are two alleles, G and E.Homozygous G individuals have fuzzy fur, homozygous E individuals have rough fur, and heterozygoteshave shaggy fur. Suppose you survey the herd and find that there are 44 fuzzy individuals, 72 shaggyindividuals, and 84 rough individuals.a)What is the size of the population?b)Do the alleles have a simple dominance relationship? Describe.c)What are the frequencies of the two alleles?d)Is the population in Hardy-Weinberg equilibrium?If not, how do you know, and what might be the cause?Imagine that you are a conservation biologist responsible for the well-being of a bufello herd consistingof 100 mature males and 100 mature females. In this herd, there is no appreciable mutation, there isno migration in or out, and there is no selection. At the Fuzzy gene locus, there are two alleles, G and E.Homozygous G individuals have fuzzy fur, homozygous E individuals have rough fur, and heterozygoteshave shaggy fur. Suppose you survey the herd and find that there are 44 fuzzy individuals, 72 shaggyindividuals, and 84 rough individuals. Suppose you watch the buffalo and discover that while all the females breed, a small number of males(10) establish breeding harems, while the other males do not breed.a) What is the effective population size of this herd? That is, what size "ideal" population ofbalanced sex ratio would have genetics similar to this population?b)How does the effective population size compare to the actual population size?c) Under Hardy-Weinberg equilibrium, what…During mating season, male rams compete with each other for access to females. This describes (please just select one answer the one the best fits) intersexual selection intrasexual selection the direct benefits model Hamilton-Zuk hypothesis Fisherian sexual selection
- Recessive Allele Frequency Typica: dd Carbonaria: Dd, DD If 10 Typica moth and 90 Carbonaria moth were released into a polluted forest what would happen over several generations? Check All That Apply The Typica moth population would decline. ENG 5:24 INTL 6/9/2 e to searchDuring mating season, male rams compete with each other for access to females. This describes Group of answer choices intersexual selection intrasexual selection the direct benefits model Hamilton-Zuk hypothesis Fisherian sexual selectionFor each of the following, identify whether it will primarily cause changes in allele frequency, genotype frequency, either allele or genotype frequency (depending on the situation), or no change is expected. Assortative Mating Mutation Migration Selection Genetic Drift [Choose ] [Choose ] allele frequency no change is expected genotype frequency either allele or genotype frequency [Choose ] [Choose ] allele frequency
- 46. Natural selection operates through differential resource use and differential status. differential survival and differential reproduction. differential survivorship and differential mortality. differential reproduction and differential fertility. differential resource use and differential reproduction.For questions 14-20, fill in the blanks using the word bank below. Fitness i Mejosis Mutations Evoludon Selected variation Competition allele frequency pressure 14. According to Darwin's theory of natural selection, every population has heritable their traits. mitosiss 15. These differences are caused by meiosis and 16. Predators, competition, changing environments will exert on individuals in a population. 17. Some traits will be beneficial and increase an organism's 18. Eventually favorable traits will be for, while hamful traits will not. 19. This will cause a shift in the of a population over time. 20. This shift in the genotypes and phenotypes of a population is known as low is a diagram demonstrating the effects of antibiotics on a population of bacteria over time. Draw a tch each box with its correct caption. 0. 000 24. 00 23. 22.Match the terms with their definitions. 1. The theory that states that the conditions found in nature result in the selective survival and reproduction of individuals whose characteristics make them better adapted to their environment. (Click to select) 2. The relative likelihood that one genotype will contribute to the gene pool of the next generation compared with other genotypes. Darwinian fitness v 3. A type of natural selection that favors individuals at one extreme of a phenotypic distribution that are more likely to survive and reproduce in a particular environment. (Click to select) 4. Extreme phenotypes are selected against and those that have an intermediate phenotype have the highest fitness value. Balancing selection v 5. Favors the survival or two or more groups that have different phenotypes. (Click to select) 6. Selection that favors two or more alleles in a more homogeneous environment. (Click to select) ces MacBook Air F1 F2 F4 F10 ! @ 23 2$ % & 2 6. 7 8 9 { Q W E R T…