In medels experiment, why did wrinkled seed shown up in the F2 generation, even though they were not present in the F1 generation

The F1 generation was heterozygous and contained the recessive gene for wrinkles. They did not show up in the F1 generation as Mendels law states that the dominant gene will always be expressed. There were two recessive genes passed down from the F1 and therefore the F2 could exhibit the wrinkled seed.

If these are the missing choices: a. to determine skin temperature, place the back of your hand against the patient's skin.b. determine body temperature by touching the patient's hands and feet.c. skin temperature will tell you very little about this patient's condition or well-being.d. the patient's skin temperature and color will likely be warm and red.my answer is: a. to determine skin temperature, place the back of your hand against the patient's skin. using the back of the hand to check for temperature rather than the palm is more effective because the back of the hand has more nerves that can feel and transmit the temperature than the palm.