Homozygous being (TT): 50%
Heterozygous being (Tt): 50%
Hetero- different
Homo- the same
Chromosomes are thread-like structures in which DNA is tightly packaged within the nucleus.
Answer:
We can see some of the most important patterns Darwin noticed in distribution of organisms by looking at his observations of the Galápagos Islands off the coast of Ecuador. Darwin found that nearby islands in the Galápagos had similar but nonidentical species of finches living on them.