Asexual and Sexual Reproduction

Exploring Asexual and Sexual Reproduction

Hardly anyone can resist the appeal of babies. Have you ever held a puppy or a kitten? Many baby animals start out as small, young versions of their parents. But how did these puppies come into being? Where did they come from? Why do they look like miniature versions of adult dogs? Do you know of any organisms that look completely different when they are young than when they are adults?

Puppies!
Puppies!
These puppies are only a few weeks old. What do you think their parents look like?

New organisms result from reproduction—“producing again.” Puppies, kittens, ducklings, and many other organisms you are familiar with are the result of reproduction involving two parents. This is known as sexual reproductionglossary term (opens in a new window). But there are many other organisms that result from reproduction involving only one parent. This is known as asexual reproductionglossary term (opens in a new window). Fungi are an example of an organism that does not require two parents for reproduction. Do you know of any other organisms that reproduce asexually?

Reproduction
Reproduction
How does life continue from generation to generation?

You can imagine that the mechanisms for both types of reproduction are complex, since they result in the making of a new organism. Genetic material must be combined, divided, passed on, differentiated, and much more.

Explain Question

Explain what happens during asexual and sexual reproduction.

A Little Help from Your Friends
A Little Help from Your Friends
Plants reproduce, too. What role does this bee play in plant reproduction?

Teacher Note

Purpose: Use this student response to evaluate students’ prior knowledge of the concept. The Model Lesson provides information on common student misconceptions. Suggested use: class discussion.

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Explain how asexual reproduction works. What organisms undergo asexual reproduction?
Press Space or enter key to Enter Text
 

Before You Begin

What do you already know about asexual and sexual reproduction?

Teacher Note

Purpose: a formative assessment used to evaluate prior knowledge and misconceptions related to asexual and sexual reproduction. Suggested use: individual work.

Screen Resolution - This interactive media is not optimized for the current screen resolution. To view the interactive, try changing your device orientation to a horizontal landscape view.
Which of the following can engage in sexual reproduction? Select all that apply.
  • A.
    <div tinymce="true" use-dimensions="false">mammals<br></div>
    mammals
  • B.
    <div tinymce="true" use-dimensions="false">viruses<br></div>
    viruses
  • C.
    <div tinymce="true" use-dimensions="false">bacteria<br></div>
    bacteria
  • D.
    <div tinymce="true" use-dimensions="false">plants<br></div>
    plants

Teacher Note

Purpose: a formative assessment used to evaluate prior knowledge and misconceptions related to asexual and sexual reproduction. Suggested use: individual work.

Screen Resolution - This interactive media is not optimized for the current screen resolution. To view the interactive, try changing your device orientation to a horizontal landscape view.
Match each phrase to the correct category.
  • two daughter cells
  • crossing over occurs
  • four daughter cells
  • daughter cells are haploid
  • daughter cells are diploid
  • Mitosis
  • Meiosis
Incorrect Answer
Correct Answer

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