A boatload of Swedish tourists,all of whom bear the MM blood group,is marooned on Haldane Island,where they are met by an equally sized population of Islanders,all bearing blood group NN.In time,the castaways become integrated into Island society.Assuming random mating,no mutation,no selection (based on blood group),and no genetic drift,what would you expect the blood group distribution to be among 4000 progeny of the new Haldane Island population?

Question

Quizplus · Accepted Answer

The M and N alleles follow simple Mendelian inheritance. With one parent MM and the other NN, all offspring will be heterozygous MN. However, when these MN individuals mate among themselves, the expected distribution in their offspring would be 1 MM : 2 MN : 1 NN, leading to 1000 MM, 2000 MN, and 1000 NN among 4000 progeny.

A Boatload of Swedish Tourists,all of Whom Bear the MM