26.04.2014 Views

Chapter 8: Mitosis - Cell Division and Reproduction

Chapter 8: Mitosis - Cell Division and Reproduction

Chapter 8: Mitosis - Cell Division and Reproduction

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

2. Asexual <strong>Reproduction</strong>:<br />

Production of offspring by a single parent through:<br />

<br />

<br />

<br />

<br />

Splitting: Binary fission in bacteria.<br />

Budding: Yeasts, plants<br />

Fragmentation: Sea stars<br />

Parthenogenesis: “Virgin birth”. Several insect species.<br />

Offspring inherit DNA form one parent only.<br />

Offspring are genetically identical to parent <strong>and</strong> siblings,<br />

unless mutations occur.<br />

Advantages:<br />

Can reproduce without a partner of opposite sex.<br />

Don’t spend time, energy, <strong>and</strong> resources to find a suitable mate.<br />

Parents pass on 100% of their genetic information to each<br />

offspring.<br />

Disadvantage:<br />

No genetic diversity of offspring.<br />

• Population less likely to survive changing environment.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!