4. if one individual is tt and another individual is tt, which of the following is true?
the two have different genotypes and the same phenotype.
the two have the same genotype and the same phenotype.
the two have different genotypes and different phenotypes
the two have the same genotype and different phenotypes.

Asample of digestive juice was removed from the stomach of a pig. the juice was placed in a test tube along with some grains of wheat. a second test tube was set up containing an equal number of wheat grains, with distilled water rather than digestive juice. the test tubes were kept for 8 hours at 40 degrees c. after 8 hours, the grains inside the digestive juice had broken into tiny particles. the grains of wheat, in the water, were wet but otherwise unchanged. what is the control group?