Final Review Day 2

Fission

•Sexual or asexual …….. why?•Describe: parent cell doubles its DNA and splits into 2 daughter cells

•Sketch•Cloning? •Yes

Conjugation

•2 organisms swap DNA•Sexual or asexual……why?

•Cloning?•No…why?

Budding

•Description: baby grows off parent organism

•Sexual or asexual …..why?

•Sketch:•Cloning?•Yes…why?

Regeneration

•Grow back body parts (starfish, lizard tail)

•Sexual or asexual…why?•Cloning?•No…why?

Fertilization

•Describe: egg with ½ chromosomes is fertilized by sperm with ½ chromosomes

•Sketch and label

Fertilization

•Sexual or asexual and why?•Cloning?•No… why?•# chromosomes in gamete= 23

•# chromosomes in zygote= 46

Mitosis

Answer questions and review

Meiosis

•Make gametes (sperm and egg)

•Only has half of the chromosomes, does NOT double DNA first

Scientific Method

•Review on board with the question “Does wearing a helmet while riding a bike prevent brain injury?”

“Does wearing a helmet while riding a bike prevent brain

injury?”• Hypothesis: • Control:• Independent variable:• Dependent variable:

• Constants:

•Now try the one on the paper

Hypothesis

•Adding worms to the soil will make a radish plant grow taller.

Control

•No worms

Independent variable

•With worms

Dependent variable

•Height of radish plant

Can she add fertilizer to some, and not

others?•NO!… why?•Can only have one variable at a time

•Discuss some constants

Start Puzzle for “homework”

•Go to CPS review