What’s the difference in these two forms of reproduction? Instructional Approach(s): Activating strategy - Allow students to briefly (1-2 minutes) discuss the answer to the question. What’s the difference in these two forms of reproduction?

Essential Question: How does sexual and asexual reproduction affect the passing of traits to offspring? Standard: S7L3b. Compare and contrast that organisms reproduce asexually and sexually (bacteria, protists, fungi, plants and animals) Instructional Approach(s): The teacher should review the essential question and the standards that align to the essential question

Reproduction Mitosis Meiosis Reproductive System Previously, you learned that cells make more cells through the process of … You learned that sex cells are created in a process called… You learned that adults produce offspring with the help of which system… Mitosis Meiosis Instructional Approach(s): The teacher should present the information on the slide to review the functions of mitosis and meiosis, and the reproductive system. Reproductive System

For this unit, we will look at reproduction with a more specific focus on the passing of traits. Transition slide

Reproduction Sexual Asexual vs. Instructional Approach(s): The teacher should introduce the two forms of reproduction that will be used to examine the passing of traits. Note: Reproduction in specific kingdoms will be discussed in the classification unit Sexual

Use the Types of Reproduction Chart to take Notes Instructional Approach(s): The teacher should give each student a copy of the Types of Reproduction Chart [linked on the resource page] to record important information during the lesson. Have students fill in the characteristics as topics are discussed.

Asexual Reproduction Instructional Approach(s): Use the cartoon to determine what the seated character is thinking in the last panel.

Asexual Reproduction Most unicellular organisms, and a few multicellular organisms use cell division to reproduce in a process called asexual reproduction. A parent organism produces one or more new organisms that are identical to the parent and live independently of the parent Instructional Approach(s): The teacher should present the information on the slide while the students record the important information on their Types of Reproduction Chart.

Asexual Reproduction The organism that produces the new organism or organism is the parent Each new organism is an offspring The offspring produced by asexual reproduction are genetically identical to the parent. Instructional Approach(s): The teacher should present the information on the slide while the students record the important information on their Types of Reproduction Chart.

Asexual Reproduction Instructional Approach: Present the slide, emphasizing one parent and two identical offspring.

Asexual Reproduction Binary Fission is a form of asexual reproduction that occurs in cells that do not contain a nucleus (Prokaryotes) Instructional Approach(s): Present information in the slide, also reviewing the term “prokaryote”.

Asexual Reproduction Instructional Approach(s): Ask students what is meant by the statement at the bottom of the slide.

Other Examples of Asexual Reproduction Instructional Approach(s): The teacher should discuss what is happening in each picture with the class (that with only one parent, two identical offspring are formed)

Sexual Reproduction Instructional Approach(s): Ask students how sexual reproduction is different from asexual reproduction (Two parents as opposed to one, offspring not identical). Note: Specific kingdoms will be covered in the Classification Unit

Sexual Reproduction Type of reproduction in which two parent cells (male and female reproductive cells) combine to form offspring with genetic material from both cells. Instructional Approach(s): The teacher should present the information on the slide while the students record the important information on their Types of Reproduction Chart.

Heredity is the passing of Genes from parents to offspring. A Eukaryotic cell has a Nucleus that contains genetic material. A Chromosome is the structure that holds the genetic material (DNA). A Gene is a section of DNA that provides instructions for specific traits. Heredity is the passing of Genes from parents to offspring. DNA is the genetic material that provides instructions for all the body’s functions. Instructional Approach(s): Review the animated slide about the location of genetic material from the previous lesson

Sexual Reproduction Each species of living things has a characteristic number of chromosomes. Humans have 23 pairs, for a total of 46 chromosomes. Instructional Approach(s): The teacher should present the information on the slide while the students record the important information on their Types of Reproduction Chart.

One Cell Makes Four Cells Sexual Reproduction Recall from our previous unit the cell process called Meiosis. What was the purpose of Meiosis? What was our general description of Meiosis? Make Sex Cells Instructional Approach(s): The teacher should pose the questions to the class or call on individual students to review information from the previous unit on Meiosis. One Cell Makes Four Cells

Sexual Reproduction The process of Meiosis creates sex cells (sperm and egg in humans) that contain half the genetic material (half the 46 chromosomes) During sexual reproduction, sex cells are combined to form unique offspring. 46 Chromosomes Instructional Approach(s): The teacher should present the information on the slide while the students record the important information on their Types of Reproduction Chart. 23 Chromosomes

Sexual Reproduction Instructional Approach(s): The teacher should use the diagram on the slide to illustrate the concept of sexual reproduction and sex cells containing half the number of chromosomes. Remind students that during meiosis, daughter cells have half the number of chromosomes as all other cells. The joining of the two reproductive cells, each with half, provides the correct number of chromosomes in the offspring.

Sexual Reproduction Instructional Approach(s): The teacher should present the information in the slide once again to reinforce the concepts of sexual reproduction.

Reproduction http://www.youtube.com/watch?v=jk2RJm5RBEk Instructional Approach(s): The teacher should show the video to reinforce the concepts of reproduction.

Asexual & Sexual Reproduction Sorting Activity Instructional Approach(s): Individual students or small groups must identify which numbers illustrate asexual reproduction and which images illustrate sexual reproduction. An explanation should also be provided as to how each set of images illustrates the concept.

Investigating Reproductive Strategies Activity Instructional Approach(s): Optional slide. May be used in differentiation for students in need of enrichment.

Comparing Asexual & Sexual Reproduction Summarizer: Comparing Asexual & Sexual Reproduction Instructional Approach(s): Each student should complete the summarizer. The teacher should use the summarizer to determine the level of student mastery and if differentiation is needed.