Meiosis
Mitosis
Electron Micrographs
Cartoon Diagrams
Radom Questions
100

What occurs during prophase 1?

Prophase 1 takes up about 90%

Chromosomes begin to condense

synapsis occurs

crossing over occurs at they chiasmata 

each pair of chromosomes form a tetrad


100

Why do we do mitosis?

For growth, repair, and asexual reproduction

100



what is cytokinesis

100


what is Metaphase


100
Which is more similar to mitosis: meiosis 1 or meiosis 2?

Meiosis 2

200

What occurs during metaphase 2?

Sister chromatids are lined up at the metaphase plate


200

Do we form sister chromatids during mitosis? If so when.

We form sister chromatids during interphase when we duplicate our chromosomes

200


what is prophase

200


what is metaphase 1

200
Are sister chromatids homologous in meiosis 2?

No.

300

What occurs during metaphase 1?

Tetrads line up at the metaphase plate

300

What is an aster?

An aster is the array of microtubules coming out of the centrosome

300


what is telophase

300


what is Anaphase 1

300

what are the three mechanisms that allow for genetic variation?

1. crossing over 

2. independent assortment of chromosomes

3. random fertilization 

400

what occurs during anaphase 1?

homologous chromosomes separate

sister chromatids remain attached at the centromere

400
How to prokaryotes replicate. Explain thoroughly.

Starting at the origin, DNA replicated.
2 origins move to opposite ends of the cel

then daughter cells split apart each containing an origin. 

400


what is anaphase

400


what is anaphase 2

400

what are recombinant chromosomes?

A mix of genes on each chromosome as a result of crossing over

500

what are sister chromatids and when do they form?

Sister chromatids are replicated and identical chromosomes.

They are formed after replication in interphase before meiosis 1

500

What is the cyclin-CDK complex that allows the cell to pass from G2 to M phase

MPF

500


what is metaphase

500


what is anaphase

500

when are cohesions cleaved off during mitosis and meiosis?

In mitosis: at the end of metaphas

In meiosis: cleaved off the arms at the end of anaphase 1 and cleaved off the centromere at the end of anaphase 2

Click to zoom
M
e
n
u