Sexual vs. Asexual ReproductionWhat’s the difference???

Asexual Reproduction

Asexual Reproduction: 1 cell becomes 2 (Mitosis) Movie

Your Job◼Find out the 6 ways that organisms can

reproduce ASEXUALLY.◼Use textbook pages 190 (Other Methods

of Reproduction) for plant species and page 310 (Asexual Reproduction) for animal organisms.

◼Take notes in ENB.◼You will be quizzed on this information in

15 minutes!!

Types of Asexual Reproduction

Page 310 Budding Fragmentation Regeneration Page 190 Plantlets Tubers Runners

Which Type of Asexual Reproduction?

Get Ready! Set! Go!

Kalanchoe

Potato

Strawberry Plant

Types Of Asexual Reproduction Plantlets – tiny plants grow along the edges

of plants leaves and falls off and grow on their own.

Tubers – underground stems or tubers can produce new plants after a dormant season.

Runners – above ground stems from which new plants can grow.

Which Type of Asexual Reproduction?

Get Ready! Set! Go!

Hydra

Newt

Starfish

Types Of Asexual Reproduction Budding – parent organism pinches off and forms new

organism Movie

Fragmentation – part of organism break off and develop a new individual that is identical.

Regeneration – organism loses a body part develop into an entirely new organism.

Advantages and Disadvantages of Asexual Reproduction

PROS

Don’t need to find mate Can stay in one place Less energy expended Can produce a bigger

population more quickly

CONS

No genetic variation Population of clones

Sexual Reproduction Sexual Reproduction: 2 cells become 1

(Meiosis)

Advantages and Disadvantages of Sexual Reproduction

PROS

Genetic variation can lead to new traits, better survival and aid evolution

CONS

Requires more energy to find mate and process usually takes longer

Slower population growth

Asexual Reproduction Sexual Reproduction

Method of

reproduction

-Only one parent

-Offspring are genetic clones of parents

-No genetic variation!

-In some organisms, it is as simple as MITOSIS

-Requires two different parents

-Specialized sex cells, made by MEIOSIS

-Lots of genetic variation, good for evolution

Quick Review✦ We grow because cells reproduce

✦ Sexual Reproduction turns two cells into one

✦ Asexual Reproduction turns one cell into two

✦ Turn to page 88 and 89 in textbook

✦ Look at the first and last pictures of the diagram

✦ Is this sexual or asexual? How do you know?

Apply What you Know…

Write two paragraphs with at least 6 sentences each describing asexual and sexual reproduction.

Paragraph 1: Asexual reproduction is…..Paragraph 2: Sexual reproduction is…

It’s GO Time…Sexual or Asexual??

Hydra

Elephant

Flat Worm

Flower

Strawberry Runner

Nemo

PlantLet

Frog

Planaria

Potatoes

Chicken

Starfish