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Biology Name ___________________ Date __________ Per. ___ Chapter 11 Study Guide Worksheet Define Phenotype Genotype Codominance Incomplete Dominance Law of Independent Assortment Diploid Haploid Probability Segregation Principle of Dominance Crossing over Gametes Linked genes Gene Map Answer the following: 1. Who is the father of Genetics?________________________________ 2. The finding that the inheritance of one trait has no effect on the inheritance of another trait is the _____________________________ 3. A genetic trait that appears in every generation of offspring would be called a ______________ trait. 4. How is genotype and phenotype different from each other? 5. How many trait(s) are being mapped out in a monohybrid cross? ____________ 6. How many trait(s) are being mapped out in a dihybrid cross? ______________ 7. Which Law did Mendel propose to describe how traits can disappear and reappear in a certain pattern from generation to generation? _____________________________ 8. What fraction of the offspring resulting from a heterozygous x heterozygous dihybrid cross are heterozygous for both traits? _____________ 9. Mendel obtained his P generation by allowing the plants to __________________ 10. An organism that has inherited two of the same alleles of a gene from its parents is called ______________________ 11. What is the probability that the offspring of a homozygous dominant individual and a homozygous recessive individual will exhibit the dominant phenotype? ______________ 12. The passing of traits from parents to offspring is called _________________ 13. What are the differences between a monohybrid cross and a dihybrid cross? 14. The F1 generation is the result of what? 15. TT is known to be ____________________ 16. Tt is known to be _____________________ 17. tt is known to be ______________________ 18. The original pure strains of Mendel’s pea plants where called the ______ generation. 19. AND….. All plants in this generation where: a. homozygous recessive b. homozygous dominant c. heterozygous d. both a and b e. none of the above 20. A reproductive process in which fertilization occurs within a single plant is __________________ 21. Mendel called the offspring of the P1 generation the first filial generation, or __________________ 22. In heterozygous individuals, only the _______________ allele achieves expression. 23. Meiosis results in one diploid cell dividing into ____________________________ 24. Mitosis results in one diploid cell dividing into __________________________ 25. 2 factors that play a role in ones characteristics are 1. __________________________ and 2. ______________________________ 26. If traits are inherited together they are probably located ________________________ on the chromosome. 27. If a pea plant has a recessive allele for green peas, how can its offspring show the same recessive gene? 28. How many alleles does and offspring receive from each parent? ____________ 29. If an organisms alleles look like Nn the ____________________ trait would show. If the alleles are nn it would show the __________________ trait. If the alleles are NN it would show the ______________________ trait. 30. Describe a multiple allele trait – Blood Type 31. Describe a polygenic trait – Skin Color 32. In 4 o’clock flowers the dominant trait for flower color is Red (R), the recessive is white(r). In a codominance a heterozygous offspring would have what color petals? __________________________ 33. What color would the petals look like if it was an incomplete dominance from question #32? ___________________ 34. What letter is the number of chromosomes in a gamete symbolized by? 35. If an organisms haploid chromosome number is 12, what is its diploid number of chromosomes? 36. In what phase of meiosis does crossing over take place? ________________________ 37. Due to the process of segregation, alleles separate during the production of _______________________ 38. The principle of independent assortment states that _________________________ for different traits can segregate independently during the formation of gametes. 39. The relative locations of each known gene can be shown on a ___________________map. 40. Know the differences between the P generation, F1 generation and the F2 generation. 41. Know and understand how to create and read a monohybrid cross and a dihybrid cross! 42. FACT TO KNOW: A mule is the result of a cross between a donkey and a horse. A mule is a hybrid.