Colour-blindness

In this activity we aim at studying the propagation of colorblindness. This activity focuses on probability of aleatory events, using Mendel’s Laws to determine Colour-blindness transmission as example.

Material:

OZOBOTs (the activity becomes clear with two robots, but it can adapted to be made using only one)

Card with Paths: in each, the genotype of a diploid cell is divided in in the genotype of two haploid cells

Counting tables

Procedure:

The procedure is the same for each card, and it bases on running OZOBOT in it aleatory mode.

Card #1: healthy parents; subtopic: probability of birth of a male child vs. a female one.

Card #2: healthy father and healthy carrier mother.

Card #3: healthy father and ill mother.

Card #4: ill father and healthy mother.

Card #5: ill father and healthy carrier mother.

Card #6: ill parents.

1. Put OZOBOTs on the path corresponding to each individuals to be combined

2. Run OZOBOT by pressing once its button

3. Note the path followed by each OZOBOT

4. Note on the counting table the occurrence of each possible combine genotype

5. Calculate the frequency for each genotype and for each phenotype]

Do your result correspond to your expectations according Mendel’s Laws?

According to Mendel’s Laws, in the worlds should women be more or less than men?