High school biology, I hope you will answer seriously.

No, you can look at the concept of chromosomal variation. As for the ...... translocationTranslocation is the transfer of a segment of one chromosome to another non-homologous chromosome, causing a variation. ......This is the concept, note that there are non-homologous chromosomes, and cross-swapping is between homologous chromosomes.

The picture is too vague, but this kind of topic is relatively simple.

1) Nail disease is an autosomal recessive inheritance. "Making something out of nothing, giving birth to a girl is often hidden. ”

B disease is inherited with x recessive. First of all, according to the "out of nothing" judgment that it belongs to recessive, if it is autosomal recessive, the No. 6 individual must carry the pathogenic gene, which does not match the title, so it can only be inherited with x recessive.

2) According to the inference, the genotype of number 8 is aaxbxb or aaxbxb, the probability of both accounts for 1 2, and the genotype of number 10 is aaxby or aaxby, and the probabilities of both are 1 3 and 2 3, respectively.

Therefore, the probability of suffering from disease A = 1 2*1 2*2 3=1 6 The probability of suffering from disease B = 1 2*1 2=1 4

Therefore, the probability of bothness = 1 6 * 1 4 = 1 24

(1) A disease is autosomal recessive inheritance, and B disease is a recessive A disease with X chromosome: the parents of a patient with nail disease do not have nail disease, but their children have nail disease, so A disease is recessively inherited. And because nail disease has female patients, and the female patient's father does not have nail disease, nail disease is not inherited with X chromosome recessiveness.

Obtainable nail disease is autosomal recessive.

Disease B: Disease B is inherited from generation to generation, and the patient is male, so disease B is inherited with X chromosome recessive inheritance (2) 1 12 (if the second female with disease A in the third row is No. 8, and the fourth male with disease B is No. 10) The genotype probability of a female with disease A is: 1 2AAB, and the genotype probability of a male with 1 2AABB is as follows:

1 3aaby, 2 3aaby, so the probability of the offspring suffering from two diseases at the same time is: 2 3 * 1 2 * 1 2 * 1 2 = 1 12

Actually, I can't see this picture very clearly.

The concentration of point B from this point is point B, which may be the concentration of the glossy surface, and point C is the concentration of the backlit side.

But the back of auxin should grow fast. Point C is clearly slow to grow.

So if point B is the auxin concentration on the backlit side, then point A is most likely the auxin concentration on the glossy side, not spot C.

At point C, auxin concentrations inhibit growth.

Wrong, the C point is not inhibited, but the concentration promotes plant growth more slowly! But it's still the concentration that promotes plant growth, it's above the y-axis!

The content of auxin is lower on the glossy side and higher on the backlit side. The concentration on the backlit side is b, so the concentration on the glossy side can only be lower than that of b, and it can only be on the left side of b. It can't be c.

It is generally believed that leaving the host cell, the virus is just a large chemical molecule, which stops moving, and is an inanimate organism; When encountering a host cell, it will show typical life characteristics (here referring to heredity and mutation) by adsorbing, entering, replicating, assembling, and releasing progeny viruses, so viruses are a kind of primitive life forms between living and non-living things.

A living object should be able to control its own metabolism (emphasis is emphasized here), and an artificial virus is only a combination of DNA and protein, and cannot carry out life activities without a host, so it is said that "viruses have no life". However, after encountering a host, it can fully exhibit the basic characteristic of life such as "reproduction", so it is said that "viruses are living organisms".

The prerequisites for both are different.

It is true that it is inanimate, but the main reason it is classified as a living thing is because it is capable of inheritance and mutation.

A virus that does not live on living cells is lifeless.

In fact, there is no need to be so rigid in concepts.

Vitamin D is converted from provitamin D, which belongs to cholesterol, so the first gap is filled with cholesterol.

1" should indicate the number of disulfide bonds. Because the synthesis of a disulfide bond between two polypeptide chains requires the removal of 2 H to form -s-, that is, a disulfide bond. r is the disulfide bond.

There are two kinds of nitrogenous bases, but they seem to be only seen in ordinary biochemistry. It is divided into two types: purines and pyrimidines. Pyrimidines are single-ring. Including cytosine, uracil, thymine. The latter purine is a bicyclic structure that includes adenine and guanine.

I'm a sophomore in high school, and we're only studying biology, so I can't help.

I forgot all ......

I'm here to mix it up ...

1. Fat.

2. The relative molecular mass of h The number of disulfide bonds formed.

3. Pyrimidine, purine, uracil, thymine, cytosine, double adenine, guanine.

Red blood cells that are mature and do not contain DNA are red blood cells.

Red blood cells have no organelles, i.e., no chondria.

Perform anaerobic breathing.

Therefore, the oxygen concentration has nothing to do with ATP production and K+ entry rate. Choose A

When the cell aerobic respiration provides ATP but is anaerobic, the cell will carry out anaerobic respiration to produce a small amount of ATP, so that K+ can enter the cell even in the anaerobic state, excluding B and D

As oxygen increases, ATP production increases, and K+ entry accelerates, eliminating a cause of carrier proteins. O2 is finite, and eventually the velocity tends to be balanced.

A mature cell of mammals cannot undergo aerobic respiration without mitochondria, so anaerobic respiration produces ATP, which has nothing to do with oxygen.

Because that cell is a mature red blood cell, it doesn't have mitochondria, it doesn't have oxygen or not, it can't do aerobic respiration.

O2 is free diffusion into the cell, and the concentration ladder is related, cellular respiration needs to consume energy, that is, ATP, and the substance enters the cell needs to be transported through the carrier, which has its own specific carrier to be transported through recognition.

Is there an answer d? Is d "for comparing color changes"?

The soybean-like solution left behind was used as the control group to compare whether there was any color change before and after the reaction.

If not, I'll have to choose A. (You don't have a D here, and it's not easy to make a positive judgment) Cause analysis:

As a biological experiment, there are some principles to grasp. This includes the principle of comparison and the principle of reproducibility. Comparatively speaking, the principle of comparison is more important than the principle of reproducibility.

PS: I'm not wrong with what I'm saying - I think it's funny. However, the blue is better than the blue, and your achievements in the future may be far better than mine.

I think the three answers of ABC are a bit problematic and past, but they should not be the main purpose.

A, experiments like this generally do not need to be repeated twice, as long as the materials used and the process of doing the two times do not change, the results are the same.

b, most of the materials used in the reducing sugar experiment will not use soybeans, but apples and pears. Soybeans don't contain as much sugar as apples, pears, etc.

c. If the experiment is simple and does not cause accidents, it will generally not fail. If it is due to the nature of the material, then even if it is one time, it is good twice, and it will fail. The redo will also fail.

I think the purpose should be more appropriate (to contrast with the color of the post-reaction mixture). Control is a principle of scientific experimental design. The ABC you gave did not involve the experimental control principle, and in general, the purpose of the experiment was not ABC.

You check if there are any omissions or any omissions in the test paper.

Well, according to the intent of the questioner, there is no correct answer to this question.

The correct answer is d control.

b is then used for the identification of reducing sugars.

In order to compare the difference between the color reaction of the two substances, protein and reducing sugar, so as to deepen the impression of the color reaction of protein.