Question

directions: use the word bank on the left to match the correct term with the definition on the right.
a. meiosis i
b. somatic cells
c. male
d. meiosis ii
e. female
f. gametes
g. diploid
h. zygote
body cells
xx
xy
a cell with two of each kind of chromosome
the name of the cell created when a sperm fuses with an egg
separates homologous pairs of chromosomes
separates sister chromatids resulting in half the number of chromosomes per cell
sex cells
directions: identify each statement below as applying to “somatic cells” or “gametes.”

1. another term for sex cells
2. egg and sperm
3. formed throughout an organism’s life
4. form in body cells
5. identical to all of the other cells of similar function
6. cells are haploid

directions: identify the stage of meiosis that is described below.

1. sister chromatids line up in the middle of the cell.
2. four individual nuclear membranes begin to form.
3. sister chromatids are separated
4. the cytoplasm is split and forms two cells.
5. crossing over occurs.
6. paired homologous chromosomes separate.

Explanation:

1. Gametes are sex - cells. Egg and sperm are gametes. Somatic cells are body cells formed throughout an organism's life and are identical to other cells of similar function. Gametes are haploid. In meiosis, sister chromatids line up in the middle of the cell in metaphase II, four individual nuclear membranes begin to form in telophase II, sister chromatids are separated in anaphase II, the cytoplasm is split to form two cells in cytokinesis (can occur in both meiosis I and II), crossing - over occurs in prophase I, and paired homologous chromosomes separate in anaphase I.

Answer:

1. gametes
2. gametes
3. somatic cells
4. somatic cells
5. somatic cells
6. gametes
7. meiosis II (metaphase II)
8. meiosis II (telophase II)
9. meiosis II (anaphase II)
10. meiosis I or meiosis II (cytokinesis)
11. meiosis I (prophase I)
12. meiosis I (anaphase I)

body cells - B. somatic cells
XX - E. female
XY - C. male
a cell with two of each kind of chromosome - G. diploid
the name of the cell created when a sperm fuses with an egg - H. zygote
separates homologous pairs of chromosomes - A. meiosis I
separates sister chromatids resulting in half the number of chromosomes per cell - D. meiosis II
sex cells - F. gametes