The correct examples of a genotype from the options you provided are:
- The flower has a red pigment gene and a copy of the white pigment gene. (This describes the specific alleles present in the organism, which is the definition of genotype.)
- The cheetah has two copies of the gene that causes stronger muscles. (This also describes the specific alleles present for a particular trait.)
The other two options ("the tree produces red fruit" and "the blue jay has shorter wings") describe phenotypes (the observable traits) rather than genotypes.