Which of the following best describes threadlike structures that connect to the centromere and move chromosomes? A:Cytokinesis
B:Sister chromatid
C:Spindle fiber
D:Centromere

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.