Meiosis Review Your test on meiosis and Mendelian genetics will be Tuesday, February 18th!!!

Where does meiosis occur? In females, meiosis occurs in the ____________. Draw an arrow pointing to this organ. In males, meiosis occurs in the ____________. Draw an arrow pointing to this organ.

What types of cells go through meiosis? Meiosis happens in the reproductive cells or ________line cells.

What happens during meiosis? DNA replication and crossing over  cell division  another cell division.

What do the daughter cells of meiosis look like and how many are there? At the end of meiosis, there are ______ daughter cells. These daughter cells are NOT _________________. In humans, each daughter cell has _______ chromosomes.

During meiosis, when are the cells diploid, and when are they haploid? Before first cell division, the parent cell is ____________. After the first cell division, the cells are ___________, but the chromosomes are still doubled( _________ shaped). After the second cell division, the cells are still ______________.

What is sex-specific meiosis? Meiosis that occurs in females is called _______________. The four daughter cells are/are not the same size (circle the correct answer). Meiosis that occurs in males is called _______________. The four daughter cells are/are not the same size (circle the correct answer).

What are the final 4 daughter cells of meiosis called? In females, one _______ ____________ and three ____________ _____________ are produced. In males, four __________ ______________ are produced.

Why aren’t the daughter cells of meiosis identical? Daughter cells of meiosis are not identical because: _____________ ____________ takes place. Homologous chromosomes pair up and _____________ sections. When chromosome pairs separate, they assort _____________________.

What is crossing over? Crossing over is when homologous chromosomes pair up and ______________ sections. Crossing over occurs during ______________. Crossing over does NOT occur after ____________.

What is independent assortment? Independent assortment means that non-homologous (different) chromosomes end up in gametes independently of each other. This means that if one gamete gets your copy of chromosome 5 that came from your mother, that same gamete could get the chromosome 6 that came from your mother or it could get the chromosome 6 that came from your father.

What is the purpose of egg and sperm cells? Egg and sperm cells are involved in ______________ reproduction. The process in which they join is called _______________. That first cell, before it has started dividing, is called a ___________. Egg, _______ (chromosomes)+ Sperm,_______ (chromosomes) = ______________, _________ (chromosomes)

Why is it important for human egg and sperm cells to only have 23 chromosomes? All human somatic cells (body cells) have ________ chromosomes. Because all somatic cells have two sets of chromosomes (1 set from mom and 1 set from dad) and form homologous pairs, these cells are called _____________ (di meaning two, or think d for double). So, to create an organism with two sets of chromosomes, the cells that join to make the organism must be ______________ (sort of sounds like half)