1 / 10

Lesson 5: Genetics and Reproduction

Lesson 5: Genetics and Reproduction. Objective #1- Compare the advantages of sexual reproduction and asexual reproduction in different situations. Hereditary information (DNA) is passed on through reproduction.

apope
Télécharger la présentation

Lesson 5: Genetics and 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. Lesson 5: Genetics and Reproduction Objective #1- Compare the advantages of sexual reproduction and asexual reproduction in different situations.

  2. Hereditary information (DNA) is passed on through reproduction • Reproduction is a process that makes new organisms from one or more parent organisms. • A species must pass on its DNA to the next generation to thrive.

  3. There are 2 forms of reproduction: • Sexual reproduction • the joining of cells (gametes) from two parents to form an individual that is genetically different from parents • Example- sperm and egg

  4. 2) Asexual reproduction production of genetically identical offspring from a single parent • a- means “without” • Similar to cloning

  5. Asexual reproduction • Mostly prokaryotes (bacteria) but some eukaryotes such as protists, fungi, and plants • There are 3 similar types of asexual reproduction • Binary fission • Spore formation • Budding

  6. Most common type of asexual reproduction DNA replication followed by division into 2 equal parts Binary fission

  7. Spore formation • Used mostly by fungi (puff balls) • DNA replication within cell and then covered by protective covering until parent cell later bursts and releases identical spores • Example- Anthracis bacillus

  8. Similar to binary fission except that a single daughter cell is produced from an outgrowth on a larger parent cell Example- Hydra Budding

  9. More efficient- if species is thriving then why change? All organisms can potentially reproduce No need to attract a mate In changing conditions, no genetic variability can lead to death of population Example- food crops suited to certain weather but then it changes = no food! Advantages and Disadvantages

  10. Summary Assignment • Graphic Organizer: Asexual vs. Sexual Reproduction • Read pg. 149 • Find 3 advantages and 1 major disadvantages to both sexual and asexual reproduction.

More Related