What was rudolf virchows involvement in the cell theory

He was responsible for the formation of the last part of the cell theory which stated that "cells arise from pre-existing cells ". Rudolf Virchows laid the foundation of cellular pathology which explained more clearer how diseases occurred at cellular level.Through his work, scientists are now able to diagonose diseases more accurate.

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".