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Name: __________________________ Quiz 1 Name: ______________________________ Heredity: Unity & Diversity Pre-assessment Part I. Asexual & Sexual Reproduction 1. What is the process of cell division that creates sex cells? 2. In mitosis, how does the amount of DNA in the daughter cells compare to the amount of DNA in the original cell? 3. In meiosis, how does the amount of DNA in the daughter cells compare to the amount of DNA in the original cell? 4. Complete the chart by marking which statement is true for asexual, sexual reproduction or both: Asexual Reproduction Sexual Reproduction DNA of the offspring is identical to that of the parent Some plants reproduce this way Requires two different parent (sex) cells. DNA of the offspring is different than that of both parents. Each time offspring are formed, a new combination of traits is passed. Advantage- variation among offspring allows for adaptations and natural selection to occur. A new organism (sometimes more than 1) is produced from only one organism. Disadvantage- offspring are exact copies of their parents, Name: __________________________ Quiz 1 so organisms don’t change much over generations. Doesn’t allow for adaptations and natural selection Advantage- no need to find a mate! Disadvantage- organisms must find a mate in order to reproduce. Budding, regeneration, fission are examples of this Part II. Genetics 1. In pea plants, tall is dominant over short. (Create a Punnett Square) a) What size pea plants will result when a pure tall plant is crossed with a pure short plant? b) What percent of offspring would be tall? 2. One cat carries heterozygous, long-haired traits (Ss), and its mate carries homozygous shorthaired traits (ss). a) Use a Punnett square to determine the probability of one of their offspring having long hair. b) List the genotypes of the parents and identify their phenotype. 3. One flower is heterozygous red (Rr) and it is crossed with a homozygous white (rr) plant. a) Use a Punnett square to determine the probability of one of their offspring having a red color. Name: __________________________ Quiz 1 b) List out all of the possible genotypes for the offspring and identify what their phenotype would be. (Hint: There are four genotypes and phenotypes.) 4. When a capital letter is used, what kind of allele is being represented? A. B. C. D. Recessive Allele Codominance Punnett Squares Dominant Allele 5. If a pea plant has a gray seed coat color, is that the pea plants phenotype of genotype? A. B. C. D. Phenotype Genotype Neither Both 6. Black is the dominant color of bunny's fur, it can be expressed using what genotype combination? A. B. C. D. E. Bb BB bb Just A and C Just A and B 7. When two identical alleles for a trait are in an organism, the organism is said to be ____________? (What are the two possible answers) A. B. C. D. heterozygous homozygous hybrid purebred Name: __________________________ Quiz 1 8.An allele that is masked when a dominant allele is present A. B. C. dominant trait recessive D. selective breeding 9. A chart that shows all the possible combinations of alleles that can result from a genetic cross A. B. C. D. Hybrid Cross Punnett square meiosis selective breeding 10. What is the genetic makeup of an organism? A. B. C. D. Phenotype Genotype Neither Both In rabbits, being albino is a recessive trait (a). Not being albino is dominant (A). 11.What are the possible genotypes of a non-albino rabbit? 12. Would the following be homozygous, heterozygous, homozygous recessive or homozygous dominant? a) HH ____________________ Name: __________________________ Quiz 1 b) Hh ____________________ c) hh ____________________ 13) Would the following be a hybrid or a purebred? a) qq ____________________ b) Qq ____________________ 14) What is the relationship between the vocabulary words heterozygous and hybrid?