Sexual vs. Asexual Reproduction - PowerPoint PPT Presentation

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Sexual vs. Asexual Reproduction

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Title: Sexual vs. Asexual Reproduction Author: JSD Last modified by: WWPS Created Date: 10/17/2004 5:34:34 PM Document presentation format: On-screen Show (4:3) – PowerPoint PPT presentation

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Title: Sexual vs. Asexual Reproduction


1
Sexual vs. Asexual Reproduction
2
DO NOW- Hwk on desk!
  • 1. Which cell part is green, found only in
    plants and is the site of photosynthesis?
  • 2. Which cell part acts as the cleanup crew,
    recycling old cell parts?
  • 3. Which cell part is found in both animal and
    plant cells and produces the energy for the cell?

3
Homework
  • Please clear everything except your homework off
    of your desk
  • We will go over it together
  • It is your responsibility to make the corrections

4
GOAL
  • To compare forms of sexual and asexual
    reproduction
  • To understand the process of mitosis

5
Sexual Reproduction
  • Sexual Reproduction
  • 1. 2 parents
  • 2. Sex cells sperm and egg
  • 3. Sperm and egg join fertilization
  • 4. Offspring look different from parent (mixed
    DNA)

6
Sexual Reproduction
  • Sexual Reproduction
  • 5. Examples
  • Humans, some plants, mammals, fish, reptiles, etc.

7
Sexual Reproduction
8
Asexual Reproduction
  • Asexual Reproduction
  • 1. One parent
  • 2. No sex cells
  • 3. Offspring produced by cell division
  • 4. Offspring identical to parent (same DNA)
  • 5. Several types in plants and animals

9
Types of Asexual Reproduction
  • Binary Fission
  • 1. Organism divides in half
  • 2. 2 identical daughter cells produced
  • 3. Daughter cells are half the parents size
  • 4. Daughter cells grow, then divide too
  • 5. In bacteria

10
Types of Asexual Reproduction
  • Budding
  • 1. Small bud grows out of parent cell
  • 2. Two different sized cells made (with
    identical DNA)
  • 3. Bud breaks off and grows
  • 4. In yeast and hydra

11
Types of Asexual Reproduction
  • Regeneration
  • 1. Repair/ grow lost body parts
  • 2. Left over cells divide to make more cells
  • 3. Lobsters, starfish, lizards

12
What type of reproduction is this??? Explain
13
What type of reproduction is this??? Explain
14
What type of reproduction is this??? Explain
15
What type of reproduction is this??? Explain
16
What type of reproduction is this??? Explain
17
What type of reproduction is this??? Explain
18
What type of reproduction is this??? Explain
19
What type of reproduction is this??? Explain
20
What type of reproduction is this??? Explain
21
What type of reproduction is this??? Explain
22
What type of reproduction is this??? Explain
23
What type of reproduction is this??? Explain
24
What type of reproduction is this??? Explain
25
Asexual vs. Sexual
26
Mitosis
  • Mitosis
  • 1. Cell division
  • 2. Causes multicellular organisms to grow (even
    in humans)
  • 3. Cells are identical to parent cells (same DNA)

27
Mitosis
  • Phase 1- Interphase
  • Chromosomes copied
  • Cell resting
  • Threadlike chromatin (DNA ball)

28
Mitosis
  • Phase 2- Prophase
  • Mitosis begins
  • Chromosomes are rodlike pairs
  • Centrioles move to poles
  • Spindle fibers connect centrioles

29
Mitosis
  • Phase 3- Metaphase
  • Chromosomes attach to spindle fibers
  • They line up in middle of cell

30
Mitosis
  • Phase 4- Anaphase
  • Sister chromatids pull apart
  • One sister of each pair goes to opposite ends of
    the cell

31
Mitosis
  • Phase 5- Telophase
  • 2 new nuclei form
  • Chromosomes are in a ball again (chromatin)

32
Mitosis
  • Phase 6- Cytokinesis
  • Cytoplasm pinches in to form 2 new identical
    daughter cells

33
Which phase of mitosis is this? Explain..
Anaphase
34
Which phase of mitosis is this? Explain..
Cytokinesis
35
Which phase of mitosis is this? Explain..
Interphase
36
Which phase of mitosis is this? Explain..
Metaphase
37
Which phase of mitosis is this? Explain..
Prophase
38
Which phase of mitosis is this? Explain..
Prophase
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