Page 201 - Science Course 3 (Book 1)
P. 201

Mo5-L2b: What are the Patterns of                 Mo5-L2c: Why are Disease Inherited?
                              Inheritance?


               Some traits, such as height, are controlled by many
               genes.                                              Mo5-L2c         Why are Disease Inherited?

                                                                 KEY CONCEPTS:
                                                                 1. What role can mutations play in the inheritance
                                                                      of disease?


                                                                              Vocabulary A-Z
                                                                              Let us learn some vocabulary


                                                                  Pedigree
                                                                  a model that shows genetic traits that were inherited
                                                                  by members of a family.
               Polygenic inheritance occurs when multiple genes
               determine the phenotype of a trait.
                                                                                     1
                              Key Concept                                  2       3                 7

                      What are the Patterns of Inheritance?
                                                                                             8
                    What are the other patterns of inheritance?                   4               9
                                                                                                            10

                                                                     5    6                   11       12

                                                                     normal male          A family :
                                                                                                      two parents
                                                                     normal female
                                                                     whirling male                     their three
                                                                                                         kids
                                                                     whirling female



                                                                  Mutation
                                                                  a permanent change in the sequence of DNA, or the
                                                                  nucleotides, in a gene or a chromosome.









                                                                      Original                 Mutant Copy

                                 SUMMARY
                                                                  Genetic Engineering
                       What are the Patterns of Inheritance?
                                                                  the modification of genetic material of an organism
                   There are many patterns of inheritance,        by inserting DNA from another organism.
                      including incomplete dominance,
                   codominance, and polygenic inheritance.










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