Global winds rising near equator and cold air sinking near the poles
Differentiation occurs numerous times during the development of a multicellular organism as it changes from a simple zygote to a complex system of tissues and cell types.
The amino acid sequence in protein from the gene fragment for botana curus
is the same with species Z that is valine, histidine, leucine, threonine, proline,
glutamine and glutamine. Meanwhile, species X and species Y has different amino
acid sequence compared to botana curus. Therefore, species Z is most closely
related to botana curus because both species has the same amino acid sequence
and has similar sized DNA fragments.
All of the above are correct.
