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Step 1 of Mendel's garden pea experiments allowing each variety of garden pea to self pollinate for several generations produced which generation?
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∙ 12y ago
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.
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Kaylah Ward
Wiki User
∙ 13y agoGregor 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.
Wiki User
∙ 9y agoMendel allowed F1 generation to selp polinate to get F2 .
Wiki User
∙ 12y agof1 generation
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Mendel obtained his P generation by allowing the plants to?
Cross-Pollinate
What was Pasteur's hypothesis in his first set of experiments?
His initial experiments, boiling broths within closed containers to prove that nothing grew within, was first to help disprove the theory of spontaneous generation. This led to a secondary discovery that micro-organisms were responsible for the spoiling of drinks like beer and wine. This lead to the process now known as pasteurization, which helped purify milk of most moulds and allowing it to keep for much longer.
2 What features of seeds and fruits have enabled angiosperms to become so widespread?
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Mendel obtained plants that were true-breeding for particular traits by?
allowed plants to self-pollinate for several generations
Mendel obtained his P generation by allowing the plants to?
Cross-Pollinate
Why did mendel begin his experiments by allowing pea plants th self -pollinate for several generations?
he was trying to have the pea plants self pollinate
Basic difference between generations of computers according to processing speed?
with each change in technology between generations it became possible to build faster computers than were possible in the previous generation. this was primarily due to two things: smaller signal voltage levels allowing faster switching into similar RC load & smaller size allowing shorter signal paths and less signal delay.
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Probably, because the bees will pollinate their crops sufficiently, allowing for more production.
What is the parent or P generation called?
The parental generation is the first set of parents crossed.The F1 (first filial) generation consists of all the offspring from the parents - their children.The F2 (second filial) generation consists of the offspring from allowing the F1 individuals to interbreed - the grandchildren of the parental generation.
Why are pedigrees helpful in understanding genetic disorder?
They allow you to examine many generations of a family, and follow traits - allowing you to postulate genotypes
What was the significance of Tuskegee Alabama in World War 2?
White people conducted Syphilis experiments on a small population of African American people. Allowing for the extreme neurological problems to take place. Significant to the War, because of the experiments the Nazi's did on the Jews.
Why do formers breed bees in their fruit orchards?
Bees are used to pollinate the trees. As they fly from flower to flower, from tree to tree, pollen attached to the bees is transferred between trees which pollinates them, allowing them to produce fruit.
Which key difference do experiments have that correlation studies do not have?
A treatment is imposed, ex.) making the participants take a certain medicine instead of just allowing them to do what they please and see how they heal.
What was pasteurization?
His initial experiments, boiling broths within closed containers to prove that nothing grew within, was first to help disprove the theory of spontaneous generation. This led to a secondary discovery that micro-organisms were responsible for the spoiling of drinks like beer and wine. This lead to the process now known as pasteurization, which helped purify milk of most moulds and allowing it to keep for much longer.
