1. Genetics Test Prep Quiz

2. Rules Each student starts with 100 points. You can bet as much as little as possible on each question based on what you think you may know about the subject. The person next to you will keep your score. Get several pieces of extra credit paper in which to write your answers. –You can use the same piece of scratch paper multiple times. No sharing answers. –If you are caught cheating, you will receive a zero on this quiz!

3. Rules Scoring: –Simply add or subtract each players wager from total. –Keep a running total. –Players must wager at least 10 points per question (but can wager more). –Over 200 points = A –150-199 points = B –100-149 points = C –50-99 points = D –Under 50 points = F –If you run out of point to bet with, you are done!

4. Example Question Category: Genetic Terms Question: What to we call alternative forms of the same gene? Answer: Alleles

5. Question #1 Category: Gregor Mendel Question: How many traits (total) did Mendel observe in his study of pea plants Answer: 7

6. Question #2 Category: Mendelian Terms Question: The hybrid offspring of the P generation are called the __________. Answer: F 1 Generation

7. Question #3 Category: Mendelian Genetics Question: If you cross a true breeding purple flowered pea plant with a true breeding white flowered plant to produce an F 1 generation. You then allow the F 1 to self-pollinate. Assuming the inheritance pattern is simple dominant/recessive, what will be the phenotypic ratio of the F 2 ? Answer: 3 purple: 1 white

8. Question #4 Category: Genetics Terms Question: The specific location of a gene on a chromosome is called a ________. Answer: Locus

9. Question #5 Category: Genetics Terms Question: If an organism has a genotype (Aa) for a specific trait, it is said to be ___________ for that trait. Answer: Heterozygous

10. Question #6 Category: Mendels experiments Question: Mendel knew that by looking at a dominant phenotype, you could not tell what the genotype was of that organism by looking at the dominant phenotype (TT or Tt). He came up with the Test Cross to determine the genotype of his pea plants with dominant characteristics. He crossed pea plants with dominant phenotypes with peas plants with this genotype to determine the genotype of the dominant plants? Answer: Homozygous recessive (tt)

11. Question #7 Category: Dihybrid Crosses Question: If you perform a dihybrid cross and get a 9:3:3:1 phenotypic ratio in the next generation, what is the genotype of each parent? Answer: Heterozygous for both traits

12. Question #8 Category: Probability Question: The _________ rule states that the probability that two or more independent events will occur together is the product of their individual probabilities (the rule of “and”) Answer: Multiplication

13. Question #9 Category: Probability Question: If you cross two individuals that are heterozygous for one trait. What is the probability that there offspring will be heterozygous for that trait as well? Answer: ½ or 50%

14. Question #10 Category: Inheritance Patterns Question: If you cross a true breeding red flowered plant with a true breeding white flowered plant and all of the F 1 comes out pink. You then allow all of the F 1 to self-pollinate and you get a phenotypic ratio in the F 2 of (1 Red: 2 Pink: 1 White). What is the inheritance pattern? Answer: Incomplete dominance

15. Question #11 Category: ABO Blood typing Question: In humans, type A blood is ________ to type B blood, creating the AB blood type. Answer: Co-dominant

16. Question #12 Category: ABO Blood Typing Question: If a women with type A blood has a child with type B blood. What his her genotype and what are the possibilities of the fathers genotype? Answer: Mother = I A i Father = I B I B or I B i or I A I B

17. Question #13 Category: Genetic Terms Question: In________, a gene at one locus alters the phenotypic expression of a gene at a second locus. This occurs in coat colors in mammals. Answer: Epistasis

18. Question #14 Category: Genetics Terms Question: Quantitative variation usually indicates _______________, an additive effect of two or more genes on a single phenotype. An example is human skin coloring. Answer: Polygenic Inheritance

19. Question #15 Category: Genetics Terms Question: A ________ is a family tree that describes the interrelationships of parents and children across generations Answer: Pedigree

20. Question #16 Category: Genetics Terms Question: __________ are heterozygous individuals who carry the recessive allele but are phenotypically normal (i.e., pigmented) Answer: Carriers

21. Question #17 Category: Genetics Testing Question: In ________, the liquid that bathes the fetus is removed and tested for genetic disorders. Answer: Amniocentesis

22. Adding it up Add up your partners final total on a clean piece of extra credit paper and turn it in to me with their name on it. Make sure you show them the score. Grading (Again) –Over 200 points = A –150-199 points = B –100-149 points = C –50-99 points = D –Under 50 points = F