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प्रश्न
If only one 'X' chromosome is found in a female person, which of the following symptoms she will show?
- epicanthal skin fold
- webbing of neck
- small testis and absence of spermatogenesis
- presence of simian crease on the palm
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उत्तर
(b) Webbing of neck
A missing X chromosome leads to Turner’s syndrome. The symptoms in females are a receding lower jaw and a short webbed neck.
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संबंधित प्रश्न
Why are thalassemia and haemophilia categorized as Mendelian disorders? Write the symptoms of these diseases. Explain their pattern of inheritance in humans.
Feminised males have ______ chromosomes.
Choose the correct option which appropriately classifies the following disorders into Mendelian and chromosomal disorders:
Colour blindness, Down syndrome, Sickle cell anaemia, Turner syndrome, Thalassemia, Haemophilia, Phenylketonuria, Klinefelter syndrome.
Where are the genes for cytoplasmic male sterility in plants located?
Down’s syndrome is due to ______.
In Down's syndrome, karyotyping has shown that the disorder is associated with trisomy of chromosome number 21 usually due to ______.
Lipoprotein lipase deficiency (LPLD)is a genetic disorder in which a person has a defective gene for lipase. This leads to high triglycerides, stomach pain, and fat deposits under the skin. It may eventually affect the liver, pancreas and may also cause diabetes. The disorder occurs if a child acquires defective genes from both parents (autosomal recessive). ERT (enzyme replacement treatment) is one of the treatments offered to patients with LPLD.
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- What procedure is followed in ERT?
- What could be one possible drawback of ERT?
- How can LPLD be treated using Biotechnology? Elaborate.
Why is thalassemia cotegorised as a Mendelian disorder? Write the symptoms and explain the causes of the disease. How does it differ from Sickle cell anaemia?
What are chromosomal disorders?
Which of the following correctly describes the composition of chromosomes in a normal human cell?
