WLHS / Biology /Monson
Name
Date
Per
Bozeman Science: MEIOSIS
(http://www.bozemanscience.com/meiosis)
1) What are the gametes in humans?
and
2) What is truly tucked away in the head of a sperm?
3) What is the function of sex?
4) Diploid means that you have two complete
5) a) Our sperm and egg cells are (HAPLOID / DIPLOID) (circle one).
b) Our somatic cells (body cells) would be (HAPLOID / DIPLOID) (circle one).
6) TRUE / FALSE (circle one). All organisms have the same life cycle.
7) What are sister chromatids?
8) During Prophase I,
occurs where little bits of the
female chromosome with switch places with little bits of the male chromosomes.
9) The big difference between mitosis and meiosis is that in mitosis there is/are
division(s) while in meiosis there is/are
division(s).
10) At the end of meiosis, the nuclei are (HAPLOID / DIPLOID) (circle one).
11) How is meiosis different in males and females?
12) What are the 3 processes during meiosis that make you “the only one like you”? In other words, why
are you different from your parents and siblings?
1)
2)
3)
13) How many different possibilities in combinations of chromosomes can we get through independent
assortment?
14) a) What is random fertilization?
b) What are the odds of 2 people looking exactly the same (aside from identical twins)?
(OVER for next video clip)
Bozeman Science: PHASES OF MEIOSIS
(http://www.bozemanscience.com/phases-of-meiosis)
1) What phase does both mitosis and meiosis start with?
2) a) The point of mitosis is to make (TWO / FOUR) (IDENTICAL / DIFFERENT) cells. (circle)
b) The point of meiosis is to make (TWO / FOUR) (IDENTICAL / DIFFERENT) cells. (circle)
3) What is a pneumonic that you can use to remember that meiosis divides twice?
4) The first major structure used in meiosis are chromosomes.
a) What are homologous chromosomes?
b) How many pairs of chromosomes do humans have?
c) What are sister chromatids?
5) What 2 structures make up the centrosomes in animal cells?
and
6) TRUE / FALSE (circle one). Interphase preceding mitosis is the exact same as interphase preceding
meiosis.
7) In Prophase I of meiosis, synapsis occurs. Describe what happens during synapsis.
8) Describe what is being combined during crossing over.
9) Where do the chromosomes line up during Metaphase I?
10) In which phase do the homologous pairs get pulled to the opposite side of the cell?
11) What phase divides the cell into 2 individual cells?
12) TRUE / FALSE (circle one). Crossing over also occurs in Prophase II.
13) How many cells / nuclei are created after Telophase II?
14) How do the cells at the end of Meiosis II compare
to the original cell?
IDENTICAL / DIFFERENT (circle one)
15) How much DNA do these cells have compared to the original cell?