Types of Reproduction Asexual Sexual

Purpose of Reproduction To make sure a species can continue. –Definition: Reproduction is the process by which an organism produces others of its same kind.

Asexual Reproduction A new organism (sometimes more than one) is produced from one organism. The offspring will have hereditary material uniform with the hereditary material of the parent organism. This means they will be genetically alike.

Asexual Reproduction Basics Is the simplest form of reproduction Occurs in plants, simple animals, bacteria, and protists Requires one parent Is more reliable than sexual reproduction Doesn’t allow for any type of genetic variation

Types of Asexual Reproduction Budding Regeneration Fission (Binary fission)

Budding Process by which a new, duplicate plant or animal begins to form at the side of the parent and enlarges until an individual is created. Examples: Hydra and Yeast

Regeneration The ability to restore lost or damaged tissues, organs or limbs. Regeneration in plants: roots, stem, leaf It is a common feature in invertebrates, like worms and starfish. No vertebrates have this ability.

Binary Fission 1. Organism divides in half 2. 2 identical daughter cells produced 3. Daughter cells are half the parent’s size 4. Daughter cells grow, then divide too 5. Ex. bacteria

Sexual Reproduction Requires two sex cells – egg and sperm The egg and sperm join to form an entirely new organism –Different from the parent organism

Sexual Reproduction Examples –Humans, some plants, mammals, fish, reptiles, etc.

Sexual Reproduction

IMPORTANT! Asexual reproduction results in offspring that are genetically identical to the parent organism Sexual reproduction results in offspring that are genetically different from the parent organisms

What type of reproduction is this??? Explain…

Advantages of Asexual Reproduction: 1.Easy and fast: grow population quickly 2.No energy spent in attracting mate, creating gametes, raising young 3.Great in a stable environment

Disadvantages of Asexual Reproduction: 1.Lack of genetic diversity- mutations stick around! 2.Not able to survive changing environments.

Advantages of Sexual Reproduction: 1.Genetic diversity that allows for **EVOLUTION** 2.More likely to survive changing environments (physical, increasing efficiency in avoiding predators, getting prey, etc.)

Disadvantages of Sexual Reproduction: 1. Population does not grow as quickly 2.A lot of energy spent in attracting mate, creating gametes, raising young