LO: SWBAT explain the difference between asexual and sexual reproduction and describe different types of asexual reproduction DN: Explain the differences between sexual and sexual reproduction HW: Vocabulary: chromosomes, asexual reproduction, sexual reproduction, binary fission, regeneration, budding, sporulation, vegetative propagation

Who thinks they can define Reproduction? The process by which living things produce other living things like themselves. The production of offspring.

What are Chromosomes? found in the nucleus determine our physical Found in Nucleus XX cell found in the nucleus determine our physical characteristics Made of DNA Instructions of cell Passed on to offspring

Types of Reproduction: Asexual Reproduction X X Clones X X Parent Offspring X X Clones Genetic Information (Chromosomes) the creation of a new individual from only parent. 1 Genetic information of offspring is to the parent. identical

Do the cells in our body undergo asexual reproduction? Yes- mitosis When do the cells of our body undergo Asexual Reproduction? Growth Repair

1. BINARY FISSION The splitting of a one-celled organism into 2 equal halves. Example: Bacteria & Ameba

The ability of organisms 2. Regeneration The ability of organisms to grow back limbs if they are cut off. If cut into 2 pieces each piece will be a new offspring. Will they be identical?

a new cell is formed from a tiny bud on the parent cell 3. Budding: a new cell is formed from a tiny bud on the parent cell Parent large and offspring small Example: hydra & yeast

Each spore (plant offspring) is a clone mold Sporulation Each spore (plant offspring) is a clone mold

Vegetative Propagation When roots, stems and leaves give rise to a new plant

Types of Vegetative Propagation: Artificial: Natural: Runners Bulbs Tubers Rhizomes Cuttings Grafting

Runners Offspring grow from one parent plant Are they identical to parent plant?

Underground stem with fleshy leaves which store food Bulbs Underground stem with fleshy leaves which store food

Underground stem enlarged for storage of food Tuber Underground stem enlarged for storage of food

Rhizomes Stems that grow sideways underground. New plants can grow from these stems.

Cuttings Vegetative part of a plant is cut, and it can develop into a new plant. Root Growth

Grafting A cutting from one plant (scion) is attached to the main body of a rooted plant (stock).

What is Sexual Reproduction? the joining of two cells to begin the development of a new individual. These called: special cells are Sex Cells (Gametes)

A fertilized egg cell is called a Zygote Sexual Reproduction XX XX XX + Offspring Egg A fertilized egg cell is called a Zygote Sperm Is the creation of a new individual from parents. 2 Offspring are not genetically to the parents. identical

What are the names of these sex cells? Egg cell (Female) Sperm Cell (Male) The joining of a sperm cell with an egg cell is called fertilization.

We get half our genetic information from mom and half our genetic information from dad 23 Females: Egg cells 23 Males: Sperm cells

Asexual vs. Sexual Reproduction Produce Offspring 2 Parents 1 Parent Offspring are not identical Offspring are identical Critical for survival of the species Bacteria, Ameba, Body Cells Humans, Dogs, Plants Asexual Reproduction Sexual Reproduction