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

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.

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
______________.

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:
1. _____________ ____________ takes place.
Homologous chromosomes pair up and
_____________ sections.
2. When chromosome pairs separate, they assort _____________________.

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

Independent assortment means that nonhomologous (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)