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प्रश्न
Very Short Answer Question.
Give an example of a chromosomal disorder caused due to nondisjunction of autosomes.
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उत्तर
Down syndrome is an example of a chromosomal disorder caused due to non-disjunction of autosomes.
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संबंधित प्रश्न
Give an example of an autosomal recessive trait in humans. Explain its pattern of inheritance with the help of a cross.
A woman with albinic father marries an albinic man. The proportion of her progeny is ______.
Sickle cell anaemia is ______.
Mental retardation in man associated with sex chromosomal abnormality is usually due to ______.
Select the incorrect statement regarding pedigree analysis.
Trisomy is represented by ______.
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 an example of ______
In Down's syndrome, karyotyping has shown that the disorder is associated with trisomy of chromosome number 21 usually due to ______.
Which of the following correctly describes the composition of chromosomes in a normal human cell?
At what level does the defect occur in chromosomal disorders?
