Question

Professor Snape is attempting to raise his own population of bloody-nosed beetles (Timarcha tenebricosa) because of their many uses in potions. nfortunately, the batch of 100 beetles he bought in Diagon Alley seem a bit on the small side - their average length was just 13 mm. He chose the largest beetles and moved them into their own enclosure, hoping their offspring would be a bit larger. The average length of the offspring of the larger beetles was 15 mm. According to the shop where Snape bought his beetles, heritability (h2) of length in the shop's colony of bloody-nosed beetles is 0.7. Using this information and the breeder's equation, calculate the average size of the beetles that Snape isolated for breeding. 2.86 mm 15.86 mm 2 mm 12.14 mm 15 mm 17 mm 17.86 mm

Answer 1

12.14mm is the average size of the beetles that snake isolated for breeding as from the information given the narrow range of variance is 0.7 hence by finding the additive variance the average size was found