Ap biology is among the most popular advanced placement tests put forth by college board each year for high school students. The test was designed to challenge and motivate students to further expand on their passion for the subject of biological sciences. According to college board, the structure for designing a proper ap biology course should focus on the following topics: molecules and cells: 25% heredity and evolution: 25% organisms and populations: 50% if your ap biology class syllabus is missing one or more of the crucial elements mentioned above, you may need to supplement your learning for the test by studying the materials provided here.

The ap biology exam advanced placement is one of more than 30 tests currently being administered by college board, a non profit membership organization. High school students who take the ap biology test have the opportunity to be graded on a college level for their exam scores. The ap biology course should be comparable to an introductory biology course that students of that major will take in their first year of college as a bio major. Requirements for enrollment in a distinguished ap biology course will be dependent on each school, but successful students should be able to demonstrate several in depth concepts of biological science through a series of multiple choice questions, essays and a lab. The ap bio exam is graded based on answers in two sections: section i: 100 multiple choice questions 1 hour and 20 minutes section ii: 4 free response essay questions 1 hour and 30 minutes students will be given a composite score of based on their combined results from both sections. Exam questions are based on learning objectives, which combine science practices with specific content. On the basis of reliable sampling studies made during a 5 year period, the following observations were made about the turtle populations of two lakes, one 300 miles north of the other.

Turtles of species a are abundant in the northern lake where turtles of species b are rare. Turtles of species b are abundant in the southern lake where turtles of species a are rare. Two geographically isolated populations usually will diverge over a long period of time. Describe how the two populations may become different, including factors that can account for these differences. Describe the nature of each of the following and discuss the role of natural selection in each situation: c. Include in your discussion the factors that may contribute to the maintenance of genetic isolation. Indicate the conditions under which allele frequencies p and q remain constant from one generation to the next.

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Calculate, showing all work, the frequencies of the alleles and frequencies of the genotypes in a population of 100,0 rabbits of which 25,0 are white and 75,0 are agouti. In rabbits the white color is due to a recessive allele, w, and agouti is due to a dominant allele, w. If the homozygous dominant condition were to become lethal, what would happen to the allelic and genotypic frequencies in the rabbit population after two generations? 13. Explain three cellular and/or molecular mechanisms that introduce variation into the gene pool of a plant or animal population. Explain the evolutionary mechanisms that can change the composition of the gene pool. The problems of survival of animals on land are very different from those of survival of animals in an aquatic environment. Describe four problems associated with animal survival in terrestrial environments but not in aquatic environments.

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· branching evolution, which implies the common descent of all species · occurrence of gradual changes in species · natural selection as the mechanism for evolution a. For each of the four contributions listed above, discuss one example of supporting evidence b. Darwin's ideas have been enhanced and modified as new knowledge and technologies have become available. Discuss how two of the following have modified biologists' interpretation of darwin's original contributions. 16.charles darwin proposed that evolution by natural selection was the basis for the differences that he saw in similar organisms as he traveled and collected specimens in south america and on the galapagos islands.

Convergent evolution and the similarities among species ecological equilalents in a particular biome e.g. Natural selection and the formation of insecticide resistant insects or antibiotic resistant bacteria natural selection and behavior such as kinesis, fixed action pattern, dominance hierarchy, etc. Biologists are interested in preserving the diversity of living organisms on the planet. Explain three of the following processes or phenomena, using an appropriate example for each: students are searching: write my paper for me more than ever before.

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