Meiosis. Identify the stage What stage? Review homologs = matching chromosomes gene = alleles =

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Presentation transcript:

Meiosis

Identify the stage

What stage?

Review homologs = matching chromosomes gene = alleles =

Key Vocabulary somatic cell –  gamete -  example gonad -

Key Vocab (cont) diploid (2n) – haploid (n) – Which is diploid, a somatic cell or a gamete?

Purpose of Meiosis  to produce gametes! (That’s easy!) OR  to reduce # chromosomes per cell by ½ WHY?? (See board)

What is a tetrad?

What funky thing do tetrads do?

Stages of Meiosis:

Interphase

Prophase I Is this cell human? How many chromosomes are pictured? How many pairs of chromosomes How many tetrads? What is 2n for this organism?

Metaphase I Note tetrads (pairs) line up on equator instead of duplicated chromosomes

Anaphase I

Telophase I How many cells? How many chromosomes per cell? How many pairs of chromosomes in each cell?

Prophase & Metaphase II

Anaphase & Telophase II

Compare & Contrast Mitosis & Meiosis (BE SPECIFIC) Contrast:

Compare & Contrast Mitosis & Meiosis (BE SPECIFIC) Compare

Compare & Contrast meiosis in men with meiosis with women: