unit 5 AP Biology

What is the definition of meiosis

sexual reproduction

what does diploid mean

2N use humans have 46, 2 sets of chromosomes

what does haploid mean

N humans have 23, 1 set of chromosomes

Crossing over

homologous chromosomes pair up and exchange a portion of their genetic information

Why is crossing over important.

to create genetic diversity. Happens in prophase I always

What equation can you use to find out the different types of gamete’s made

2^n

Independent assortment

Happens in metaphase I, when the chromosomes line up in the middle and

Why need meiosis II

Animals cells have too much information in meiosis I so meiosis II so split it more

Why are females eggs a polar body

Becuase they converse cytoplasm becuase organelles come from the eggs that are nutrient rich

What is the difference between mitosis and meiosis

is asexual and creates 2 daughter cells while creates 4 daughter cells

1st step in meiosis

chromosomes duplicate

2nd step

meiosis I, homologous chromosomes separate, haploid cells with duplicated chromosomes

3rd step

Meiosis II, sister chromatids separate, haploid cells with unduplicated chromosomes