<span>a comet striking Earth during your lifetime is very unlikely so (A.1)</span>
Cell division in Prokaryotes is more simple because prokaryotes only have one circular chromosome, no nucleus, and few other organelles. However, eukaryotes have multiple chromosomes contained within a nucleus and many other organelles.
<span>Connecting heredity to chromosomes
</span><span>
Describing chromosomes
</span><span>Confirming the chromosome theory of inheritance
</span>
<span>Morgan's lab connects eye color with inheritance of sex chromosomes</span>
The answer would be A. Mica.