From the study of mendel's experience, infer how two tall parents could have shorts offspring

One or both of the parents may have a recessive gene for short height. For example: T=dominant gene for tall height and t=recessive gene for short height. Father: TT
Mother: Tt
If you do a Punnett square, you can determine that there is a low(<25%) possibility that the offspring will be short
Father: Tt
Mother: Tt
If you do a Punnett square, you can determine that there is a 25% or higher possibility that the offspring will be short since one of the alleles will be tt, making the offspring short.

It just all depends on where you live at the moment