1 / 11

Asexual Reproduction

Asexual Reproduction . Advantages and Disadvantages. Binary Fission. Bacteria reproduce by a process called binary fission

kishi
Download Presentation

Asexual Reproduction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Asexual Reproduction Advantages and Disadvantages

  2. Binary Fission • Bacteria reproduce by a process called binary fission • Binary fission: a copy of their single chromosome is produced and then the cell divides in half so that one half gets one chromosome and the other half gets the other chromosome • Because the chromosome was duplicated, each new cell receives a complete set of hereditary information

  3. Asexual Reproduction • Binary fission is an example of asexual reproduction in single celled organisms • Multi-cellular organisms that reproduction asexually is more complex and occurs in the nucleus through mitosis. • Only types of asexual reproduction are: • Budding • Fragmentation • Gemmules (Internal Buds) • Regeneration

  4. Budding • Offspring grows out of the body of the parent • Hydras exhibit this type of reproduction • Jellyfish also • reproduce through • budding

  5. Sponges • Sponges reproduce asexually through gemmules (internal buds) • A parent releases a specialized mass of cells that can develop into an offspring

  6. Fragmentation • In this form of asexual reproduction, the body of the parent breaks into distinct pieces, each of which can produce an offspring. • Molds, yeast and some mushrooms reproduce in this way.

  7. Regeneration • If a piece of a parent is detached, it can grow and develop into a completely new individual. • Flatworms use this type of asexual reproduction.

  8. Mitosis • In a complex cell going through asexual reproduction, the nucleus divides during a process called mitosis. • Mitosis ensures that each new cell received the same number and kinds of chromosomes that were present in the parent cell. • In both binary fission/mitosis, these processes produce two offspring with hereditary information that is identical to the parent cell.

  9. Mitosis

  10. Advantages and Disadvantages of Asexual Reproduction • Advantage: an organism does not have to wait for a partner to be able to produce offspring. • Disadvantage: the offspring are exactly like the parents (no variation in DNA). • Asexual reproduction does not allow organisms to have variation from generation to generation. (could cause an organism to die out if changes occur in ecosystem)

More Related