Why did Mendelian use peas in his genetic studies?

In fact, Mendel did not use only peas to study heredity, he tried almost all the plants in his own garden, but only found a pattern in peas. At that time, there were many scientists doing genetics research, but none of them were successful. Later generations have emphasized the importance of peas to Mendel in summarizing the reasons for his success.

Peas are pollinated with closed flowers, so they are all purebred, which avoids the proportion of dominant homozygous and heterozygous mixing when the material is taken to interfere with the test. This is the most important point, which led Mendel to derive a 3:1 ratio and infer the laws of heredity.

The rest is incidental: the flowers are large and easy to hybridize; Traits are easily distinguishable; The number of offspring is large, and the statistics are more accurate; It is easy to survive, and the growth cycle is short...

Peas are self-pollinating plants.

And it's closed-flower pollination. That is, when the pea flower is not in bloom. Pollination has already been done.

Interference from foreign pollen is avoided.

So peas are generally purebred in their natural state.

The results of artificial hybridization experiments with peas are reliable and easy to analyze.

1.Because peas are self-pollinating plants and pollinate closed flowers, they avoid the interference of foreign pollen, and peas are purebred.

2.Peas also have traits that are easy to distinguish

3.The peas are large and easy to handle

Self-pollination, closed-flower pollination, large flowers, easy to manipulate, and easy to distinguish relative traits.

Peas are self-pollinating and have many traits that are easy to distinguish.

1.Self-pollination traits are relatively pure and harmonious.

2.The relative traits are obvious and easy to distinguish and compare.

1. Peas are strictly self-pollinating, closed-pollinated plants, so the offspring obtained in their natural state are purebred.

2. There are obvious differences between different traits of peas, such as tall stems and short stems, and there is no third height between the two.

3. Mendel also found that these traits of peas can be stably passed on to offspring. Hybridization between pea varieties with these easily distinguishable and stable traits is easy to observe and analyze.

4. Peas can reproduce and produce many offspring at a time, so it is easy for people to collect a large amount of data for analysis.

5. Pea flowers are easy to pollinate.

Peas are self-pollinating plants, and they are pollinated by closed flowers, that is, when the pea flowers are not opened, pollination has been completed, avoiding the interference of foreign pollen. Therefore, peas are generally purebred in their natural state, and the results of artificial hybrid experiments with peas are reliable and easy to analyze.

Play is a self-pollinating plant, and closed-flower pollination, that is, when the pea flower is not open, it has completed pollination, avoiding the interference of foreign pollen, so the peas are purebred in their natural state.

The scientific method used in Mengdefuer's pea hybridization experiment is hypothesis-deductive method 1, the reason for choosing peas:

Pea is a plant that self-pollinates and closes its flowers, which avoids the interference of foreign pollen (corn flowers are unisexual flowers and cannot be self-pollinated, so corn flowers are not selected in the experiment); Peas have traits that are easily distinguishable.

2. Scope of use: Only one pair of relative traits is studied; Nuclear inheritance of eukaryotes that undergo sexual reproduction.

3. Method: hypothesis-deductive method (finding the problem, proposing the hypothesis, verifying the hypothesis, summarizing and inducting).

Combining a pea species with purple flowers and a pea species with white flowers, the peas that produce purple flowers for the first time, the peas that produce purple flowers for the second time, and the peas that produce white for the third time are all white.

Mendel's conclusion through the hybridization experiment of peas:

1. The law of gene segregation: In the somatic cells of organisms, the genetic factors that control the same trait exist in pairs and are not fused. During the formation of gametes, pairs of genetic factors are separated, and the isolated genetic factors enter different gametes and are passed on to offspring along with the gametes.

2. The law of free combination: the separation and combination of genetic factors that control different traits do not interfere with each other. In the formation of gametes, the paired genetic factors that determine the same trait are separated from each other, and the genetic factors that determine the auspicious and hungry characteristics of different sexes are freely combined.

Peas are closed-flowered pollinated plants, purebred in their natural state, correct;

Peas are purebred in their natural state, right;

The use of peas as experimental materials has direct economic value and has nothing to do with experiments, wrong;

There are some stable, different and easily distinguishable traits among the varieties, so the correct choice: c