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This mainly reflects that organisms can reproduce on their own, and sometimes they can spread some pollen.
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Self-pollination means that the pistils of pea flowers receive pollen from the stamens of the same flower, rather than from other flowers or plants; This ensures that the genes of the next generation come from the mother's parent, i.e. the self.
Closed-flower pollination means that the pea flower has completed pollination and pollination before flowering, which means that after the pea flower has bloomed, other pollen will not affect it, which also ensures self-pollination.
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Well, pea self-pollination embodies the kind of uh self-growth of living things. The idea is that they can survive on their own.
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Heredity. Pea is self-pollinating, but also closed pollination, closed pollination means that the pea flower has completed pollination and pollination before flowering, that is to say, after the pea flower blooms, other pollen will not affect it, which also ensures self-pollination.
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This nature is the embodiment of the survival of the fittest to adapt to the production environment, to adapt to the self-purification made by this society.
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Pea is a self-pollinating plant, and it is also pollinated by closed flowers, and it is also a pea flower that has completed pollination when it is not open, avoiding the interference of foreign pollen Geneticist Mendel used it as an experimental material to discover the law of gene segregation and free combination.
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Hello, friend pea self-pollination embodies some important characteristics of living beings, the trait of self-reproduction, I hope it can help you.
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In fact, it embodies the concept of anti-eating of living beings.
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This reflects the plant's strong adaptability, and it achieves good reproduction through self-pollination, which is a manifestation of its auspicious vitality.
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: The pea is a hermaphroditic flower, and in its natural state, the stamens in one of its flowers pay its pollen directly to the stigma of the pistil of the same flower, and the pea is pollinated before the flower opens, so it will not.
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Self-pollinating and fertilization prior to flowering.
Peas were selected by Mendel as the material for genetic experiments because of their standard absolute self-pollination characteristics.
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To spread a concept is to teach it a natural ability to teach.
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Now the pea, his calligraphy and paintings, the one that embodies the point of view of many creatures, we can all get better help.
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How to celebrate the normal temperature of the peas in the new year, the normal temperature is automatically turned off, and we will all like it.
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Peas are self-pollinating, reinforcing the idea of biological hybridization.
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Self-pollination of peas embodies the idea of the reproductive capacity of living beings.
The biological self has a relatively strong ability to reproduce.
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The cost of Pea's autobiography reflects the value of biology, and such values are still worth pursuing for all of us.
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Pea flower pollination embodies the idea of biology, just move to know what this pea pollination is.
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Peas are self-pollinating and closed-pollinated. This variety of peas looks and feels so beautiful, with red flowers, white flowers, bowl peas are pollinated by wind and insects, peas are already pollinated by the time of flowering, and the possibility of genetic mutation is very small. Pea pollination during flowering, self-pollination and closed flower pollination, pea self-pollination, closed flower pollination, and therefore pollination before flowering.
Pollination at the flowering stage is a form of self-pollination.
Peas are pollinated first and then flowerPea is a self-pollinating plant, and it is also pollinated by closed flowers, and it is also a pea flower that has completed pollination when it is not open, avoiding the interference of foreign pollen Geneticist Mendel used it as an experimental material to discover the law of gene separation and free combination Its plants can usually be divided into two types: tall stems and short stems, and the seed coat of the seeds it bears can be divided into two types: round grains and wrinkled grains.
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Pea flowers belong to closed-flower pollination, the flowers are isolated from the outside world during the pollination period, and the flowers are pollinated when they are not open, because peas are self-pollinating plants, and they are closed-pollinated plants, and they are usually purebred under natural conditions, and the relative traits are easy to distinguish and can be stably inherited.
Cotton is cross-pollinated, and the pollen of different flowers is transmitted to the flower column of the pistil by wind, water, insects or human activities for fertilization.
Self-pollination refers to the phenomenon in which pollen from one flower falls on the stigma of the pistil of the flower (as distinguished from cross-pollination). A few plants in nature are self-pollinating, such as barley, wheat, soybeans, etc.
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Peas: self-pollinating. Cotton: cross-pollination.
Self-pollination: It is a flower that has both stamens and pistils, and belongs to the hermaphroditic flowers. The pollen on your own stamens can be transmitted to the stigma of the pistil to fertilize it.
Cross-pollination: unisexual flowers, a flower has only stamens or pistils, not both. Pollination can only be passed from one flower to another.
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Summary. From the results of pea hybridization experiments, Mendel concluded that there are dominant and recessive principles in relative traits. While there are quite a few exceptions, it is still a principle.
Mendel made further inferences based on the principles he had discovered in his experiments. He believes that the substance that determines the color of peas must be the granular genetic units that exist in the cells, that is, the genetic factors with stability. He imagined that in the cells of the body, genetic factors exist in pairs; In germ cells, genetic factors are single.
For example, the pollen of peas is a male germ cell, and the genetic factors are present in a single form. In the roots, stems, leaves and other body cells of peas, genetic factors exist in pairs. That said, Mendel believed that the color of the observable flower was determined by the genetic factors involved.
Peas are strictly self-pollinating plants, so why can they be hybridized?
It is because peas are self-pollinating that they are used.
Otherwise, there will be distractions.
Because peas are the only way to reproduce, they need to provide receptor cells during reproduction, so they cannot carry out the seed propagation process. Therefore, hybridization experiments can be carried out on peas in the interval of pollination self-flowering.
Compared with the self-pollinating plants, the genes are purer, and there are fewer interference factors in this experiment, and it is easy to obtain satisfactory results.
In its natural state, the pea is a plant that pollinates itself by flowers and closes its flowers. Mendel's experiment was a hybridization experiment, in which the stamens of the female parent were removed and the pollen of the male parent was given, which was a hybridization. These are two cases.
From the results of pea hybridization experiments, Mendel concluded that there are dominant and recessive principles in relative traits. While there are quite a few exceptions, it is still a principle. Mendel made further inferences based on the principles he had discovered in his experiments.
He believes that the substance that determines the color of peas must be the granular genetic units that exist in the cells, that is, the genetic factors with stability. He imagined that in the cells of the body, heredity exists in pairs due to rubber bands; In germ cells, genetic factors are single. For example, the pollen of peas is a male germ cell, and the genetic factors are present in a single form.
In the nonsense of the roots, stems, leaves and other body cells of the pea Liangshenlu, genetic factors exist in pairs. That said, Mendel believed that the color of the observable flower was determined by the genetic factors involved.
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1.Pea is a plant that pollinates by self-pollination and closed flower, that is, when the pea flower is not opened, it has already completed pollination, avoiding the interference of foreign pollen. Therefore, peas are generally purebred in their natural state, and artificial hybridization experiments are done with peas, which are simple to operate and reliable in results.
2.Peas have some stable, easily distinguishable traits, yellow-green and rounded, which are easy to distinguish and easy to analyze.
3.The experiment is low-cost, easy to operate, and each pea plant will produce a large number of peas, which can ensure that the traits of peas conform to the probability distribution, which is conducive to ensuring the accuracy of mathematical statistics.
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Summary. The average flower is a cross-pollinated plant, which blooms first and then pollinates.
But peas are not only strictly self-pollinating plants, they are also closed-pollinators.
The so-called closed pollination is the pollination of the flowers when the flowers are closed. In general, there are two situations, one is to pollinate before flowering, as in the case of peas; The other is "never open", like the closed flowers of different eaves.
Therefore, when doing pea hybridization experiments, it is necessary to use tweezers to open the flowers and remove the immature stamens when the flower buds are staged.
When the peas are pollinated by hand, that is, when the stamens are ripe, do the peas bloom at that time?
The average flower is a cross-pollinated plant, which blooms first and then pollinates. But peas are not only strictly self-pollinating plants, they are also closed-pollinators. The so-called closed pollination is the pollination of the flowers when the flowers are closed.
There are generally two situations, one is to complete pollination before flowering, as in the case of peas; The other is to dismantle the trap is "never opened", like the closed flowers of the eaves flower. Therefore, when doing pea hybridization experiments, it is necessary to use tweezers to open the flowers and remove the immature stamens when the flower buds are staged.
Wait a minute. What I want to ask is when it is pollinated by hand.
It didn't bloom.
Yes, it hasn't bloomed yet.
So need to rip it off?
Can pollinate, right?
Thank you Ning. That's right.
No thanks, just give a thumbs up for convenience, good night.
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Peas are canopy self-pollinating plants, right;
The pea is a self-pollinating plant, false;
The pea is a self-pollinating and closed-flower pollinating plant, correct;
Peas have relative traits that are easy to distinguish, right;
The pea flowers are relatively large and easy to perform emasculation and artificial pollination operations, correct;
Peas are hermaphroditic flowers, wrong
Peas are easy to cultivate, right
Therefore, b
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