what is the probability of 2 tall pea plants hetrozygous for the tall allele producing a short pea plant

2 answers

If short is recessive, 25%. If short is dominant, 75%.

https://www.google.com/search?q=punnett+square&client=safari&rls=en&tbm=isch&tbo=u&source=univ&sa=X&ei=N7hhUoCNNqi4yAGL54CYBw&ved=0CEAQsAQ&biw=1049&bih=834&dpr=1
the answer is 25%