Answer the following question given this paragraph: For example, remember that for the height gene in pea plants there are two possible factors. These factors are alleles. There is a dominant allele for tallness (T) and a recessive allele for shortness (t) . Q: What factors determine the effect of a gene? A:

Options are:
+ metabolites;
+ genomes;
+ ribosomes;
+ alleles;
The answer is:
alleles