Can anyone help me summarize the traits of dominant recessive inheritance on the X sex chromosome in

I would like to give you a mantra: (the most important thing is to practice a lot, and I will naturally do it) out of nothing is implicit, and there is nothing out of nothing;

Recessive inheritance looks at female diseases, and the female sick father is positive and non-partner;

Dominant inheritance looks at male diseases, and male patients are not partners.

Also remember: 1) Recessive inheritance is passed down from generation to generation, dominant inheritance is passed from generation to generation, if it is inherited on the Y chromosome, all the people who are sick from generation to generation are male!

2) Recessive inheritance with X chromosome is characterized by more male patients than females, and intergenerational or cross-inheritance; If the X chromosome is dominant, there are more females than males and it is inherited consecutively.

3) If there are many pathologies to be judged, judge them one-on-one.

4) Keep in mind the location of some of the more common genetic diseases on the chromosomes.

The recessive inheritance characteristics of X chromosome are: there are more male patients than women, female diseases are paternal disease, and intergenerational or cross-inheritance; If the X chromosome is dominantly inherited, there are more females than males, males and mothers are sexually and continuously.

Selected core "high school biology" autosomal genetic knowledge points are summarized.

Features: 1. It has the phenomenon of intergenerational cross-inheritance;

2. There are more men and fewer women among the patients;

3. The father and son of the female patient must be the patient, which is abbreviated as "female disease, father-son disease";

4. The mother and daughter of a normal male must behave normally, which is abbreviated as "male positive, mother and daughter positive";

5. The mother and daughter of the male patient should be at least the bearer of the pure balance belt.

1. Regardless of men and women, as long as there are pathogenic genes, they will develop the disease, but because women have two X chromosomes, the incidence rate of women is higher than that of men. Because there is no masking effect of a normal chromosome, the onset of the disease is often more severe in men than in women.

2. One of the patient's parents must have the same disease (except for gene mutations).

3. It can be inherited for several generations, but the normal children of the patient will not have the pathogenic gene and pass it on to the offspring.

4. The male patient transmits the disease to his daughter, but not to his son, and the female patient (heterozygous) transmits the disease to half of his sons and daughters.

Features: 1. It has the phenomenon of intergenerational cross-inheritance;

2. There are more men and fewer women among the patients;

3. The father and son of the female patient must be the patient, which is abbreviated as "female disease, father-son disease";

4. The mother and daughter of a normal male must behave normally, which is abbreviated as "male positive, mother and daughter positive";

5. The mother and daughter of the male patient should be at least carriers.

Recessive genetic traits on the X chromosome.

1) There were more male patients than female patients;

2) There is a phenomenon of intergenerational cross-inheritance;

3) If a woman is sick, her father and son must be sick;

4) If a male is sick, his mother and daughter are at least carriers;

5) Males are normal, and their mothers and daughters must be normal.

Dominant inherited traits on the X chromosome.

1) One of the patient's parents must be a patient, and there are more female patients than male patients;

2) It usually occurs in the family from generation to generation, with a continuous phenomenon, that is, if a man is sick, his mother and daughter must be sick, and the son is normal; If the woman is normal, her father and son must be normal;

3) If a woman is sick, one of the parents must be the patient; 1 2 of each child may have the disease, but heterozygous women sometimes have milder disease;

4) Females are normal, and their fathers and sons are all normal.

intergenerational cross-inheritance; more men than women;

The father and son of the female patient must be the patient, the mother and daughter of the normal male must be normal, and the mother and daughter of the male patient must be at least carriers.

With X chromosomes, the offspring is a girl who does not have the disease (unless both parents are recessive carriers) and a boy has a certain chance of developing the disease depending on the type of chromosome of the parents.

It's actually very simple: the son of an abnormal mother with this gene must get sick, and the daughter may not have a normal father's daughter.

Mother is sick His father and son must be sick.

Do you know the characteristics of the recessive inheritance with x?

1) There were more male patients than female patients;

2) There is a phenomenon of intergenerational cross-inheritance;

3) If a woman is sick, her father and son must be sick;

4) If a male is sick, his mother and daughter are at least carriers;

5) Males are normal, and their mothers and daughters must be normal.

Dominant inherited traits on the X chromosome.

1) One of the patient's parents must be a patient, and there are more female patients than male patients;

2) It usually occurs in the family from generation to generation, with a continuous phenomenon, that is, if a man is sick, his mother and daughter must be sick, and the son is normal; If the woman is normal, her father and son must be normal;

3) If a woman is sick, one of the parents must be the patient; 1 2 of each child may have the disease, but heterozygous women sometimes have milder disease;

4) Females are normal, and their fathers and sons are all normal.

There are more male than female offspring of the patient, and both the father and son of the female patient are affected. Both the mother and daughter of the male patient are carriers.

Do you know the characteristics of the recessive inheritance with x?

1) There were more male patients than female patients;

2) There is a phenomenon of intergenerational cross-inheritance;

3) If a woman is sick, her father and son must be sick;

4) If a male is sick, his mother and daughter are at least carriers;

5) Males are normal, and their mothers and daughters must be normal.

Dominant inherited traits on the X chromosome.

1) One of the patient's parents must be a patient, and there are more female patients than male patients;

2) It usually occurs in the family from generation to generation, with a continuous phenomenon, that is, if a man is sick, his mother and daughter must be sick, and the son is normal; If the woman is normal, her father and son must be normal;

3) If a woman is sick, one of the parents must be the patient; 1 2 of each child may have the disease, but heterozygous women sometimes have milder disease;

4) Females are normal, and their fathers and sons are all normal.