Question

can someone help me with mitosis and meiosis?

Answer 1

Mitosis consists of 4 different stages.
- Prophase
Homologous chromosomes pair up and exchange segments, based on their size and shape.

- Metaphase
Pairs of homologous chromosomes line up

- Anaphase
Split up

- Telophase
Two haploid cells are formed, but chromosomes are stilled doubled

Sorry thats only very basic but I can't think of the rest right now.

Answer 2

its ok. because my eoc is monday i just needed a slight review.

Answer 3

hey if you want more, meiosis is has 2 different part Meiosis 1 and Meiosis 2
In meiosis 1 the crossover and duplication occurs. However in Meiosis 2 the segregation part occurs.
If you want more depth I can go in more depth

Answer 4

yeah could you go more in depth?

Answer 5

Meiosis 1 consist of 4 different phase
Prophase
Metaphase
Anaphase
Telophase

Prophase 1 has the crossover. This is where different chromosomes exchange information (this is where DNA diversity between the child and parent comes from, otherwise without the cross over we'd be clones)

Metaphase 1 is when the chromosome pair all lines up on the equilatorial plate of the cell

Anaphase 1 is when the chromosome pair segregates to the opposite end of the cell (at the centrosome end.)

Telophase 1 is when cytokenisis occurs ( i forgot how to write it)

In Meiosis 2 you have the same process occuring, just now you have meiosis 2 occuring in 2 different cells that were created in Meiosis 1. Those 2 cells both have one pair of chromosome.

All the same phase occur in the same order. HOWEVER there is no crossover anymore, the chromosome stay the same forever. What occurs that is different is when you hit anaphase 2, the chromosome segregates at opposite end ( at the centrosome) and now they didn't segregates in pair of chromosome but in single chromosome. So when telophase 2 occurs you have cytokinisis that creates 2 haploid cell with 2 different chromosome! I hope you understand.

Answer 6

OMG you made perfect sense, like thats the first time I think I understood this:)

Answer 7

My pleasure good luck on whatever test you have!

Answer 8

thank you so much!