You are here : / / / 6 Reasons Why Your Gums are Bleeding. If you regularly see red when you brush your teeth, it could be cause for concern. Here's why your gums are bleeding ' and what to do about it. Jackie Middleton.
Between 1856 and 1863 Mendel cultivated and tested some 29,000 pea plants (Pisum sativum). This study showed that one in four pea plants had purebred recessive alleles, two out of four were hybrid and one out of four were purebred dominant.
Mendel expirimented with the garden pea plant. First he pollinated short pea plants with tall pea plants. The next generation of pea plants resulting from the expiriment were all tall pea plants. He bred two of the pea plants from thhe new generation and they ended up having 3 tall pea plants and 1 short pea plant.