Breeding colored mice
The materials required for this science fair project:
- 2 male black mice (30-60 days of age)
- 2 male white mice (30-60 days of age)
- 6 female black mice (30-60 days of age)
- 6 female white mice (30-60 days of age)
- 4 cages or wooden boxes for the mice
- 1 bag of food
1. For this science fair project, the independent variable is the color of the mice – black and white. The dependent variable is the color of the newborn mice. This is determined by observing the color of the fur on the newborn mice after 7 days. The constants (control variables) are the number of male and female mice in the cage, the size of the cage and the age of the mice.
2. Old newspapers are cut or torn into small pieces and placed on the floor of the boxes or cages. The mice are placed in the boxes according to the following colors :
a. Box 1 - 1 black male mouse and 3 white female mice
b. Box 2 - 1 black male mouse and 3 black female mice
c. Box 3 - 1 white male mouse and 3 white female mice
d. Box 4 - 1 white male mouse and 3 black female mice
3. The mice in the box will take about 1 week to breed and another 3 weeks for the gravidity (pregnancy). After about 4 weeks, the baby mice will be born. The number of newborn mice in each box is counted and recorded in the table given below.
4. It will take another 3 days for hair to start growing on the newborn mice, and this process will continue for about 10 days. Around the seventh to the tenth day, once the color of the hair is recognizable, record it in the table below.
Handle the mice carefully and was your hands after handling.