Help understanding meiosis?

Posted on 2016-03-10 18:50:00 in Biology by HAKUNA

So I'm trying to understand meiosis for a quiz tomorrow. Can you let me know if I got toe right idea ? 

So you have a cell with 46 single chromosomes and then duringninterphasw, they duplicate to become 46 duplicated chromosomes where the single chromosomes are now cheomatids. There are 23 duplicated chromosomes from mom and 23 from dad. There are 2 chromosomes for everything that codes for us , 1 from mom, 1 from dad. Those pair up and are called homologous pairs( prophase). They either cross over (synapsis ) in prophase or the duplicated chromosomes line up in their pairs at the cell's equator (metaphase) and are ready randomly assorted. The duplicated chromosomes reach opposite poles of the cell (telophase) and then meiosis 2 begins. Each cell now has 23 duplicated chromosomes which means 46 single chromosomes. The goal is to have 23 single chromosomes in each cell so they go through meiosis 2. And since each of the 2 former cells divides into 2, you end up with 4 gametes, each with 23 single chromosomes.

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