9:13 \\ Done api.playposit.com Selection acts on heritable (genetic) variation: Variation in cow mi production 4QL-1200 Average 80 L Smart breeder: breeds most productive cows- 120L On average F1 produces 100L Response to selection (R)= 100L-80L = 20L 1Z2e ws Selection differential (S): average of individuals selected to breed average of whole population 120-80 = 40L If heritability was 100% then response to selection should be 40L... but because some variation is environmental: LW h2=R/S h2=20/40 =0.5 Go and you have a breed of dogs whose height is on average 40cm tall but you want to produce a tea cup versi on. You select dogs that are 25cm tall to breed and in your next generation the average height in your breed is 35cm. What is the heritability of this trait? OC) 33% 71% 63% 15%