Download I. Asexual Reproduction 1. Some organisms pass an exact copy of

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Chapter Nine Outline
Lesson 2: How Organisms Reproduce
Objectives:
I.
Asexual Reproduction
1. Some organisms pass an exact copy of all their _________________ to their
offspring. As a result, the offspring are identical to the _____________________.
2. This form of reproduction is called _________________________ reproduction.
Their cell divides to form two __________________________ _________________.
3. The new cells allow your body grow, heal, and replace _______________
________________.
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II.
Date:
Advantages and Disadvantages of Asexual Reproduction
ASEXUAL REPRODUCTION
DEFINITION
ADVANTAGES
DISADVANTAGES
EXAMPLES
SEXUAL REPRODUCTION
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III.
Date:
Mitosis
1. In cells that have a nucleus, asexual reproduction occurs in the form of
___________________. Mitosis is the dividing of a cell’s nucleus. Before the cell
undergoes mitosis, it makes a _______________ of its DNA.
2. The DNA is found in the nucleus in rod-shaped structures called
___________________________.
3. STAGES OF MITOSIS:
The main steps in mitosis and cell division:
a. During mitosis the __________________ disappears.
b. The pairs of ______________________ line up in the center of the cell.
c. The members of each pair separate and move to ___________________________
ends of the cell.
d. The cell _____________________________ pinches in between the two sets of
chromosomes.
e. A __________________ forms around each set.
f. Two identical cells are ______________________.
g. Each new cell has an exact copy of the chromosomes that were in the parent cell.
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IV.
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Sexual Reproduction
1. Humans and many other kinds or organisms have two
_____________________________.
2. During sexual reproduction, a cell from one parent joins with a cell from the other
parent. Most _________________________ and ______________________________
reproduce by sexual reproduction.
V.
Gametes
1. Sexual reproduction involves both a female parent and a male parent. The female
produces the ___________________ ______________________.
2. The male produces _________________ ____________________.
3. Sperm cells and egg cells are called sex cells or ________________________________.
VI.
Meiosis
1. Gametes form by a division of the nucleus called _______________________________.
During meiosis the ___________________________ disappears.
2. The pairs of _______________________ line up and in the center of the cell and then
separate.
3. A ____________________ forms around each set of chromosomes. Next, the cell
divides into two ________________________ cells.
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4. Stages of Meiosis
a. DNA in chromosomes have been ____________________________________.
b. Paired _____________________________ line up.
c. Paired chromosomes separate and move to the opposite sides of the
_________________.
d. The cell _________________________________.
e. Paired ______________________________ line up.
f. Members of each pair separate and move to ___________________________ sides of
the cell.
g. The ________________________ divides. Four sex _____________________________
are formed.
VII.

FERTILIZATION
Fertilization is the process by which a sperm cell and an egg cell join to form
____________________ ______________________.

The cell is called a ____________________________.