Which gene(s) seemed to play the biggest roll in the differentiation of a pancreas cell into a beta-islet cell?  4 & 9
5 & 6
6
6 & 7
9​

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction.