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Breeding Corn. Activity 4: Breeding Corn LIMITED LICENSE TO MODIFY. These PowerPoint® slides may be modified only by teachers currently teaching the Science.

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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:

1 Breeding Corn

2 Activity 4: Breeding Corn LIMITED LICENSE TO MODIFY. These PowerPoint® slides may be modified only by teachers currently teaching the Science and Global Issues SEPUP course to customize the unit to match their students’ learning levels or to insert additional teaching aides. Modified slides may be used only by the modifying teacher in his or her classroom, or shared with other teachers of Science and Global Issues within the teacher’s school district, with these same restrictions. Modified slides may not be taken out of the classroom or distributed to any non-student person or organization. Except for use with students in the classroom, modified slides may not be published in printed or electronic form, including posting on the Internet. Only text may be modified: photographs and illustrations on the slides may not be modified in any way except to change their size. DISCLAIMER OF WARRANTY. THE REGENTS OF THE UNIVERSITY OF CALIFORNIA (“University”) MAKE NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. University will not be liable for any costs, damages, fees or other liability, nor for any direct, indirect, special, incidental or consequential damages (including lost profits) with respect to any claims by the purchaser or user of Science and Global Issues or any third party on account of or arising from the use or modifications to the slides. Client acknowledges and accepts that University services are provided on an as-is basis.

3 Activity 4: Breeding Corn Corn Reproductive Structures

4 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.

5 Activity 4: Breeding Corn  How can information about the genetic makeup of plants help farmers breed plants for desirable traits? Challenge

6 Activity 4: Breeding Corn Breeding Corn: First Generation

7 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.

8 Activity 4: Breeding Corn Procedure Creating a Punnett Square

9 Activity 4: Breeding Corn Which describes the cross that produced ear A? Ear B? Punnett Square XPunnett Square YPunnett Square Z

10 Activity 4: Breeding Corn Procedure Breeding Corn: Second Generation

11 Activity 4: Breeding Corn Follow Up  How does a Punnett square show the possible results of a cross between two individuals? Analysis 1

12 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

13 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

14 Activity 4: Breeding Corn  How can information about the genetic makeup of plants help farmers breed plants for desirable traits? Revisit the Challenge

15 Activity 4: Breeding Corn  allele  dominant  Punnett square  recessive  selective breeding  sexual reproduction  trait Key Vocabulary


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