Sum7LS4Week1b(1slide)

Sum7LS4Week1b(1slide) - Probabilities Ch 3. P. 49-51...

Info iconThis preview shows pages 1–13. Sign up to view the full content.

View Full Document Right Arrow Icon
Probabilities Ch 3. P. 49-51
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Probability • Multiplication rule (Product rule): The probability of independent events occurring together is the product of the probabilities of the individual events. Probability of A and B = P(A) X P(B) • Additive rule (Sum rule): If events A and B are independent, the probability that at least one of them occur, P(A or B) is P(A) + P(B) - [P(A) X P(B)] Probability = # times event is expected to happen # opportunities (trials)
Background image of page 2
• What is the probability of drawing an Ace of Hearts from this deck of cards? Probabilities
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
• What is the probability of drawing an Ace or a King from this deck of cards? p(Ace) + p(King) (4/52) + (4/52) = 8/52 Sum Rule Probabilities
Background image of page 4
• What is the probability of drawing an Ace or a Heart from this deck of cards? p(Ace) + p(Heart) - p(Ace of hearts) (4/52) + (13/52)-[(4/52)(1/4)] = 16/52 Sum Rule and Product Rule Probabilities
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Figure 9.13 F 1 Genotypes B b female B b male Formation of eggs Formation of sperm 1 / 2 B B 1 / 2 b 1 / 2 B B 1 / 4 ( 1 / 2 × 1 / 2 ) 1 / 2 b b B 1 / 4 B b 1 / 4 b b 1 / 4 F 2 Genotypes The Rules of Probability The rule of multiplication - The probability of a compound event is the product of the separate probabilities of the independent events
Background image of page 6
What is the probability of finding a zygote of RRYY genotype in the cross RrYy x RrYy? RrYy RrYy x All possible gametes: RY Ry rY ry One way to solve/approach this question…
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2. What is the probability of YY in the F2? 1. What is the probability of RR in the F2 ? 1/2 X 1/2 = 1/4 1/2 X 1/2 = 1/4 Thus, the probability of RRYY = 1/4 x 1/4 = 1/16 What is the probability of finding a zygote of RRYY genotype in the cross RrYy x RrYy? Another way to solve/approach this question is to break it down into two monohybrid crossess… 1) Rr x Rr and 2) Yy x Yy
Background image of page 8
What is the probability of obtaining a round, green seed from dihybrid cross? What is the genotype(s) of a round green seed? (R = round, r = wrinkled, Y = yellow, y = green)
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon