If a Chromosome is like a book then a gene is like

Many farmers prefer cattle without horns because it is safer for their herds. the allele for no horns (n) is dominant to the allele for the presence of horns (n). a farmer mates a male with horns to a heterozygous female without horns. what is the chance that the offspring will have horns?

"your temperature analysis reveals a pattern with coldest temperatures located to the portion of the map."

What is an example of a scientific question that galileo could not have answered with out this new tool?