Name: ______________________________________________________Period: _______ Date: __________________
Meiosis and Fertilization Activity
Standard: 2a
Objective: Students will be to explain how in sexual reproduction chromosomes separate and segregate randomly during
cell division to produce gametes containing one chromosome of each type.
Steps
Follow the instruction in “Cell division-Double or
Nothing” handout and record the responses.
Name the
meiosis phase
Parent cell
Drawing
for step 2
Prophase
Drawing
for step 3
Drawing
for step 4
Drawing
for step 5
Drawing
for step 6
Drawing
for
step 7
Gametes - Reproductive cells
Explain the main cellular events in each
of the division stage
Part A. Meiosis Summary Questions
1. Review the activity and compare the chromosome number of the parent cell with that of each of the four gamete cells.
 How many chromosomes are in the Parent cell? (step 2)
_______
 How many chromosomes are in one gamete cell? (step 7) _______
2. The genetic information in the parent cell is [ less / the same / more ] than the gamete cell.
Part B. Fertilization: Read and following the guided instructions
What is another name for sex cells?
Drawing
for step 9
What is the name of male sex cells?
sperm
egg
What is the name of female sex cells?
What is the name of the process shown on the left?
Drawing
for step 10
What is the name given to a fertilized egg?
Offspring
Part C. Fertilization Summary Questions
1. The offspring is genetically [ identical / different ] than the parents because…
2. What is the importance of meiosis and fertilization in sexual reproduction?
3. You have 46 chromosomes in each of your somatic (body) cells. How many chromosomes are in each gamete cell
(sperm or egg)?
4. Sex cells called gametes are produced by [ mitosis / meiosis ].
Part D. Think Visually. Use two different colors to represent two homologous pairs of chromosomes. In the diagram
below, illustrate what happens to the homologous pairs of chromosome during three phases of meioses.
Prophase I
Description:
Metaphase I
Description:
Anaphase II
Description: