Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
3 Answers
- Anonymous1 decade agoFavorite Answer
Well the basic unit of inheritance is information carried in the genes and units of inheritance that are carried on the chromosomes.
For example; Off springs inherit information from their parents but do not look exactly like them because there are some genes that are dominants that will cancel out the less dominant DNA information.
Gregor Mendel made a Pea experiment to learn how traits are inherited.
In one of the experiments, he cross-pollinated smooth yellow pea plants with wrinkly green peas.
(The organisms that are used as the original mating in an experiment are called the parental generation and are marked by P in science texts books). Every single pea in the first generation crop(marked as fl) was as yellow and as round as was the yellow, round parent. Somehow, yellow completely dominated green and round dominated wrinkly.
As a result of this experiment, he was convinced that there were distinct units of inheritance which were not blended together in off sprint because he realized that there were peas, some of which had more influence on the offspring than others but which never mixed together. In mixing round and wrinkled peas, he got all round peas, followed by quarter wrinkled peas second generation down the line.
Therefore, there are two kinds of traits; dominant and recessive. In this case, the dominant traits are the yellow color and the round shape since they show up at the expense of the green color and the wrinkly shape. He also learned that the inheritance of each trait is determined by "units" or "factors" - now called genes.
Now he went on with his experiment and planted seeds from the all-yellow, all-round crop, achieved from the parent generation, and self-pollinated the grown up plants. The results led to some surprises. Most of the second generation (marked as f2) of peas were yellow and smooth, but some were green or wrinkly. Mendel repeated his experiment many times and the f2 generation consistently had a 3:1 ratio of yellow to green and round to wrinkly. How did Mendel explain his results?
Source(s): Research. - 6 years ago
....And each gene has a specific location called a locus on a certain chromosome and is passed to the next generation via reproductive cells called gametes (sperm and eggs)
- Anonymous1 decade ago
No. Look it up for yourself. Google is your friend.