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Name_________________________________________________Period_________Due_________ BSU Extra Credit Chapter 10 Mendel Study Guide 1. What is the genotype of the pink flowers? 2. If two pink snap dragons are crossed, what % of offspring will be pink, red and ivory? 3. If an ivory and a pink are crossed, what % will be pink red and ivory? 4. What type of inheritance (dominance) does the snap dragons show? In Guiney pigs, Black is dominant to white and Rough hair is dominant to smooth hair. 5. Cross a heterozygous black-homozygous smooth with a homozygous white-homozygous smooth. Fill out the Punnett to the right. 6. What is ratio of of offspring? ______Black Rough, _____Black smooth, _____white Rough, smooth _____white 7. List the possible genotypes of a Rough black, a Rough white and a smooth black, smooth white 8. When you are looking at a phenotype ratio of 9:3:3:1, what can be said about the genotype of each. Can you tell the genotype? 9. Roan cows are a codominant trait when a red bull mates with a white heifer. In chickens, a black rooster and a white hen produce checkered chickens. Show a Punnett of each producing 100% roan offspring or 100% checkered chicks.. 10. A rabbit that is called a Chinchilla Breed can have a coat that is gray but have a genotype combination of cchcch, or cchc. cchc, or In blood types, a person can be O, A, AB, or B. Of what are these an example? 11. What was Mendel studying when he was experimenting with peas? 12. How is a hybrid formed? 13. The chemical factors that determine traits are called____________________. 14. Define the Principle of Dominance. 15. In peas, when is the only time that a pea will be green? (Yellow is dominant) 16. In corn, if a purple corn is crossed with a purple (purple is dominant), how would 25% of offspring end up yellow? 17. Tall is dominant to short. If you cross a homozygous tall parent with a homozygous short parent, what % will be medium height? 18. In each P generation you cross a homozygous tall parent with a homozygous short parent. If the alleles did not segregate during meiosis, what would the offspring ALWAYS look like, even in the F2 generation? 19. For what is the principle of probably used, as well as Punnetts? 20. What is the probability of a plant being tall if both parents are hybrid tall? 21. Define homozygous 22. Define Heterozygous. 23. Define the Principle of Independent Assortment. 24. Define the Principle of Dominance 25. List three things that a Punnett can show. A B C 26. Will a Punnett show actual results genetic crosses? 27. The ratio of 9:3:3:1 in a dihybrid cross is an example of which definition listed in 21-24. 28. Parent 1 is RrYy and Parent 2 is RRYY, what are the possible phenotypes of the 16 offspring? 29. Parent 1 is RrYy and Parent 2 is rrYy, what are the possible phenotypes of the 16 offspring? 30. Of what example is skin color, eye color, and height in humans? 31. Mendel’s principles of genetics applies to which types of organisms? 32. What are linked genes? 33. Can linked genes ever separate? .abcd efghijklm 34. In the above chromosome to the right, which is more likely to separate gene a and c or gene g and m? List one linked gene on this chromosome. 35. If Purple flowers were linked to Yellow peas, would the 9:3:3:1 ratio apply? 36. If two genes are on the same chromosome, and they almost always show up together, what can be said about their location to each other? 37. In corn, if 50% of your kernels are yellow (recessive) and 50% are purple (dominant) what is the genotypes of the parents? 38. In meiosis, what assorts independently? 39. Using the letters A, a, B, b, indicate the genotype of a Homozygous, and heterozygous.