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Genetics Study Guide Integrated Science 2 Name: Date: Pd: This test is cumulative, covering all of the topics described below. It is worth approximately 50 points and consists of some multiple-choice, some matching, and mostly short/long answer questions. The quiz is scheduled for Wednesday, May 4. Both sides of a 3 x 5 notecard for with your own handwritten notes will be allowed. Complete the following study guide using binder paper. Use your IS book to supplement activities and notes in your binder. The study guide will not be turned in for a grade. Define: homozygous, heterozygous, genotype, phenotype, dominant, recessive, haploid, diploid, gamete Compare and contrast mitosis and meiosis. Explain the relationship between genes, alleles, and chromosomes. Explain the process of meosis, including crossing over. Explain how sexual reproduction results in offspring that are genetically similar & different from their parents. Explain how independent orientation and crossing over lead to genetic variation. Explain the relationship between meiosis, sexual reproduction, and punnett squares. Explain how a punnett square can be used to predict the inheritance of a trait based on the observed phenotypes in a population of organisms. Explain nondisjunctions and describe examples of chromosomal disorders that are the result of nondisjunctions. Explain what causes DNA based disorders and provide examples Complete the following punnett squares, recognizing these are examples of the three types you will need to know how to complete! For each you should have a key, square, and G/P table. o In a certain species of mouse, pointed ears (P) are dominant over round ears (p). Predict the genotypes and phenotypes of a cross between two heterozygous pointed-eared mice. o In a certain type of flower, yellow petals are dominant to red petals and round petals are dominant to pointed petals. A heterozygous yellow, pointed flower is crossed with a red, pointed flower. Draw the Punnett square. o Colorblindness is a sex-linked recessive trait in humans. A colorblind man marries a female who is a carrier for colorblindness. What is the probability that they will have a child who is colorblind?