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.
wiping the pollen on the carpel of green seed pea plants. This process is known as cross- pollination where the seeds came from two different plants. Mendel studied seven different pea plant traits: plant height, the position of the flowers, pea pod shape, pea pod color, seed shape, seed color, and flower color. 1) Why was it important for Mendel to use true-breeding pea plants? (Hint: scientific method)