Leila has dimples because she received a gene copy from her father that coded for dimples. this means that dimples are an example
of a trait that is
a
not controlled by a person's genes
b
controlled by more than one gen
c
controlled by only one gene.
d.
controlled by a person's environment only

B. controlled by more than one gene

Explanation:

Organisms have two genes that make a physical characteristic. A dominant allele or a recessive allele. When a parent is homozygous both genes are dominant, for example (DD or dd) heterozygous however both genes are different one is dominant other is recessive for example (Dd)

I think the correct answer from the choices listed above is option A. A potential negative  consequence of using genetically engineered medicine would be that gene markers that are resistant to antibiotics are used, providing the possibility for humans to have increased antibiotic resistance. Hope this answers the question. Have a nice day.