When Mendel crossed a tall pea plant with a short pea plant, the first generation of offspring were always _[blank]_. When Mendel crossed the offspring with each other, the distribution was about _[blank]_% tall and _[blank]_% short. 

When Mendel crossed a tall pea plant with a short pea plant, the first generation of offspring was always empty. When Mendel crossed the offspring with each other, the distribution was about 12% tall and 2% long.