Probability genetics

Question 1

Multiplication rule?

Answer 1

2 events occuring at the same time with 1 result

Question 2

Addition rule?

Answer 2

1 event can occur in more than 2 different ways

Question 3

Example 3 children - chance of 2D and 1S?

Answer 3

D D S - 0,5x0,5x0,5 = 1/8
D S D - 1/8
S D D - 1/8
1/8+1/8+1/8 = 3/8

3 events 1 outcome
1 event in 3 different ways