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Bozeman Biology Questions: Multiplication and Addition Rules
http://www.youtube.com/watch?v=y4Ne9DXk_Jc
Law of Multiplication (“Independent Events in Sequence”)
1. What is the probability of rolling “snake eyes” on two pairs of dice?
2. What is the probability of picking a three out of a deck, returning it to the deck, and then picking
a king out of the deck?
3. In a cross between parents that are heterozygous for purple flower (Pp), what is the probability
that the flower will be homozygous recessive?
4. In a cross between AaBbCc x AaBBCC what is the probability the offspring will be AaBbCC?
Law of Addition (“Mutually Exclusive Events”)
1. What are the odds of rolling a two or a five on a six-sided dice?
2. What are the odds of picking a five or a heart out of a deck of 52 cards?
3. In a cross between pea plants that are heterozygous for purple flower (Pp), what is the
probability of being a heterozygote?
4. In a cross between AaBbCc x AaBBCC, what is the probability that the offspring will be AaBbCc
or AABBCC?