Fill in the blanks:
1. Rudolph Virchow discovered cell division in _______.
2. Robert Remak in ____published observations on cell division.
3. Walther Flemming in _______discovered chromosomes that appear double in nature.
4. Wilhelm Roux proposed that _________carried a different set of heritable elements.
5. Gregor Mendel in _______published a paper on heritable elements in peas.
6. August Weiseman __________that in successive generations, individuals of the same species have the same number of chromosomes.