Presentation on theme: "Breeding Corn. Activity 4: Breeding Corn LIMITED LICENSE TO MODIFY. These PowerPoint® slides may be modified only by teachers currently teaching the Science."— Presentation transcript:
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Activity 4: Breeding Corn Introduction Sexual reproduction is reproduction in which two parents contribute genetic material to the offspring. Selective breeding is the process by which organisms with desirable traits are mated with the goal of producing even more desirable offspring. Read the introduction.
Activity 4: Breeding Corn How can information about the genetic makeup of plants help farmers breed plants for desirable traits? Challenge
Activity 4: Breeding Corn Breeding Corn: First Generation
Activity 4: Breeding Corn Procedure Basic Genetics An organism has two copies of the gene for each of its traits. These copies are called alleles. A dominant trait will mask another version of a trait. A recessive trait will be hidden by a dominant trait.
Activity 4: Breeding Corn Procedure Creating a Punnett Square
Activity 4: Breeding Corn Which describes the cross that produced ear A? Ear B? Punnett Square XPunnett Square YPunnett Square Z
Activity 4: Breeding Corn Procedure Breeding Corn: Second Generation
Activity 4: Breeding Corn Follow Up How does a Punnett square show the possible results of a cross between two individuals? Analysis 1
Activity 4: Breeding Corn Follow Up What do you predict will happen if a purple corn plant with the genes Pp is bred with a corn plant with purple kernels and the genes PP? Explain your answer, and include a matching Punnett Square. Analysis 3
Activity 4: Breeding Corn Follow Up How could scientists use selective breeding to help solve a sustainability challenge such as breeding a crop that can survive drought? Analysis 4
Activity 4: Breeding Corn How can information about the genetic makeup of plants help farmers breed plants for desirable traits? Revisit the Challenge