AP Biology Mitosis & Meiosis Labs Natalia Sivackova.

AP BiologyMitosis & Meiosis Labs

Natalia Sivackova

BACKGROUND INFORMATION Processes of cell division 2 types Mitosis: parent cell produces two “daughter”

cells that are genetically identical Meiosis: parent cells divide and produce the

gametes that give rise to new individuals

LAB 1“Study the process of mitosis using slides of

onion root tips or whitefish blastulae”

Cell Cycle

Process called karyokinesis:

-Prophase

-Metaphase

-Anaphase

-Telophase

Process called cytokinesis

Interphase

Prophase Metaphase

AnaphaseTelophase

Cytokinesis

Homologous Chromosomes

• What genome is composed of• Similar but not identical• Carries same genes in same order• But alleles for each trait might not be the same

Synapsis

Crossing over (prophase 1) Come together Sections are exchanged Both parents

LAB 2

“Observing the crossing over in a fungus Sordania”

Produces spores of different colors

Fertilization occurs when growing filaments meet

Zygotes form

• Meiosis occurs in haploid ascospores

End!

Sources: http://www.phschool.com/science/biology_plac

e/labbench/lab3/spores2.html(pictures, labs, and information)