he used plants that were NOT true breeding!
Peas
Gregor Mendel took two true-breeding plants with contrasting traits and cross-pollinated them, producing offspring with genes for both characteristics. He used selective breeding.
by emasculation and hand pollination
he used plants that were NOT true breeding!
Mendel was interested in the offspring of two different parent plants, so he had to prevent self-pollination. He removed the anthers from the flowers of some of the plants in his experiments. Then he pollinated them by hand with pollen from other parent plants of his choice. When pollen from one plant fertilizes another plant of the same species, it is called cross-pollination.
Mendel allowed the first generation plants to self pollinate.
To control the crossing of the traits.Because his experiments were aimed at what happened when you cross pollinated the plants with different characteristics. Self-pollination would have meant that his experiments would not have worked.
Gregor Mendel did his experiments because he was looking to see how genetics and heredity worked. He used pea plants because they bred true. He found that the taller plants all produced tall plants if they were self pollinated. If short plants were used and were cross pollinated, they would all be short.
Gregor Mendel used pea plants for his hereditary experiments
Mendel removed the anthers of one of the plants.
Peas
Gregor Mendel took two true-breeding plants with contrasting traits and cross-pollinated them, producing offspring with genes for both characteristics. He used selective breeding.
Gregor Mendel developed the model of heredity that now bears his name by experiments on various charactersitics of pea plants: height (tall vs. Short); seed color (yellow vs. Green); seat coat (smooth vs. wrinkled), etc. The following explanation uses the tall/short trait. The other traits Mendel studied can be substituted for tall and short.Mendel started out with plants that "bred true". That is, when tall plants were self-pollinated (or cross-pollinated with others like them), plants in following generations were all tall; when the short plants were self-pollinated (or cross- pollinated with others like them) the plants in following generations were all short.Mendel found that if true breeding Tall [T] plants are crossed (bred) with true breeding short [t] plants, all the next generation of plants, called F1, are all tall.Next, he showed that self-pollinated F1 plants (or cross- pollinated with other F1 plants) produce an F2 generation with 3/4 of the plants tall and 1/4 short.A. 1/4 of the F2 generation are short plants, which produce only short plants in the F3 generation, if they are self- pollinated (or crossed with other short F2 plants;) these F2 plants breed true.B, 1/4 of the F2 generation (1/3 of the tall plants) are tall plants that produce only tall plants in the F3 generation, if they are self-pollinated; these tall F2 plants breed true.C. 1/2 of the F2 generation (2/3 of the tall plants) are tall plants that produce 1/4 short plants and 3/4 tall plants in the next [F3] generation, if they are self-pollinated. This is the same proportion of tall to short that F1 plants produce.
by emasculation and hand pollination
Mendel found that every fourth plant had white flowers when he allowed the first generation to self-pollinate. Gregor Mendel was a scientist who lived from 1822 to 1884.hyuyt6yt8
Gregor Mendel's pea plant experiment allowed him great control, as pea plants can self-pollinate or cross-pollinate, and he was able to pollinate them at will. He studied the characteristics of each plant he would cross-pollinate, perform the pollination and plant the resulting seeds, then study the characteristics of the resulting plants.
Pea Plants.