Which of the following gives the BEST example of data that you could use to determine whether a mutation in a developmental gene was responsible for speciation in a particular group of animals?
You could only use standard techniques to sequence the gene and see whether it differed in different species
You could compare the sequence of the gene in different species and see the effects of different forms of the gene in genetically modified organisms
• You could use genetic engineering to turn the developmental gene on and off to determine what it does within the group of animals that interests you
You could examine closely related groups of species to see whether they have the identical gene
(1 point)