1 one is correct.....he never think about linkage......later after chromosome mapping it was found that Mendel was lucky that they don't show much linkage !
Index fossils (also known as guide
fossils, indicator fossils or zone
fossils) are fossils used to define
and identify geologic periods (or
faunal stages).
tiene como principal de función la conducción de la información de razónamiento y el comportamiento del ser humano mientras que la médula espinal tiene como principal función el
Answer:
They are small and have pores which allows for easy gas exchange, whereas the larger vessels do not allow gas to exchange through their walls.
Explanation: