Transcript Sexual vs. Asexual Reproduction

Sexual vs. Asexual
Reproduction
Sexual Reproduction
• Sexual reproduction involves two parents, one male and a female
• The male produces sperm which contains 50% of the new offspring's
DNA and the female produces and egg which contains 50% of the new
offspring’s DNA. When put together they make 100% of the new
offspring’s DNA
• The advantage of this is that offspring will have genetic diversity and
look different from their parents and will have the genetic diversity
that allows them to adapt
• The disadvantages are that it takes a lot of energy to make sperm and
eggs and to find a mate.
Asexual Reproduction
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Only requires one parent
The offspring’s DNA will be the same as the parents
All the offspring will be uniform (look identical to the parent)
The advantage of asexual reproduction is that parents do not have to
use energy to find mates or to produce sperm or eggs.
• The disadvantage is that all the offspring will be uniform and
susceptible to the same diseases and predation because they will not
have the genetic diversity to allow them to adapt
Types of Asexual reproduction
• Binary Fission
- When unicellular organism (such as bacteria) split in half
becoming two
• Budding
- When yeast, coral, & hydra create a duplicate of themselves
inside themselves
• Segmentation/Regeneration
- When starfish & worms regenerate after being cut in half
• Vegetative Reproduction
- When a plant plants a piece of itself in the soil that becomes
disconnected from the original plant and grows by itself.
Binary Fission
Budding
Segmentation/Regeneration
Vegetative Reproduction
Warm-Up (10/31/16)
1. How many parents are involved in sexual and asexual
reproduction?
2. What two things are requires for sexual reproduction?
3. What are the advantages of asexual reproduction?
4. If a new virus shows up, which will be able to adapt:
sexually produces offspring, or asexually produced
offspring? Why?