Which of the following discoveries is most crucial to explaining why all organisms share the same genetic code?
a vesicles containing the same organelles
b microspheres' similarities to modern meteorites
c rna's ability to self-catalyze
d dna's ability to absorb carbon molecules

Suppose a scientist measures the amount of dna per cell of a particular diploid species at various stages of meiosis. she finds that the meiotic cells contain 3.7 pg , 7.3 pg , or 14.6 pg of dna. match each stage of the cell cycle to the corresponding amount of dna contained within a cell at that stage.

What are 3 reasons that natural selection occurs

How far down have geologists drilled holes ? (science) a: 3.8 km b: 12 km c: 100 m d: 1200 km