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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?
XXXX
• found in the nucleus • determine our physical characteristics • Made of DNA • Instructions of cell• Passed on to offspring
cell
Found in Nucleus
Types of Reproduction: Asexual Reproduction
X XX X
X XX X
X XX X
Genetic Information(Chromosomes)
ParentOffspring
1) the creation of a new individual from only parent.1
2)Genetic information of offspring is to the parent.identical
Clones
Clones
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
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?
3. Budding: •a new cell is formed from a tiny bud
on the parent cell•Parent large and offspring small
•Example: hydra & yeast
Types of Vegetative Propagation:
Natural:
1)Runners2)Bulbs3)Tubers4)Rhizomes
Artificial:
1)Cuttings2)Grafting
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)
Sexual Reproduction
XX + XXXXXX
Sperm
Egg Offspring
A fertilized egg cell is called a Zygote
1) Is the creation of a new individual from parents.2
2) Offspring are not genetically to the parents.
identical
What are the names of these sex cells?
Sperm Cell (Male)
Egg cell (Female)
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
23Females:Egg cells
Males:Sperm cells