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प्रश्न
Give any 'two' names of X-linked diseases
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उत्तर
Colour blindness and haemophilia are examples of X-linked diseases.
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संबंधित प्रश्न
A child suffering from Thalassemia is born to a normal couple. But the mother is being blamed by the family for delivering a sick baby.
- What is Thalassemia?
- How would you counsel the family not to blame the mother for delivering a child suffering from this disease? Explain.
- List the values your counselling can propagate in the families.
Give an example of an autosomal recessive trait in humans. Explain its pattern of inheritance with the help of a cross.
Identify the characteristics that are observed in an individual suffering from Klinefelter syndrome.
i. Gynaecomastia, under developed testis and no spermatogenesis.
ii. Voice pitch is harsh.
iii. They are tall with long arms.
If a genetic disease is transferred from a phenotypically normal but carrier female to only some of the male progeny, the disease is ______.
Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement.
Mental retardation in man associated with sex chromosomal abnormality is usually due to ______.
Read the following and answer from given below:
Turner's syndrome is an example of monosomy. It is formed by the union of an allosome-free egg and a normal 'X' containing sperm or a normal egg and an allosome-free sperm. The individual has 2n = 45 chromosomes (44 + X0) instead of 46. Such individuals are sterile females who have rudimentary ovaries, underdeveloped breasts, small uterus, short stature, webbed neck, and abnormal intelligence. They may not menstruate or ovulate. This disorder can be treated by giving female sex hormones to women from the age of puberty to make them develop breasts and have menstruation. This makes them feel more normal.
Turner's syndrome is a/an ______
Read the following and answer from given below:
According to Mendel, one gene controls the expression of one character only. The ability of a gene to have multiple phenotypic effects because it influences a number of characters are an exception. The gene has multiple phenotypic effects because its ability to control two or more characters can be seen in cotton. In cotton, a gene for the lint also influences the height of the plant, size of the ball, number of ovules, and viability of seeds.
Which of the following disorder is an example of genes with multiple phenotypic effects?
Why is the frequency of red-green colour blindness is many times higher in males than that in females?
Identify chromosomal disorder caused due to non-disjunction of the 21st number of chromosomes and enlist its symptoms.
