Agalaxy cluster contains between galaxies. 5 to 50 50 to 1,000 1,000 to 5,000 5,000 to 10,000 10,000 to 50,000

The spermists believed that: the male made the only hereditary contribution to the offspring the male and female traits were blended in the offspring the female made the only hereditary contribution to the offspring the male and the female made equal contributions to the next generation