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प्रश्न
Give the importance of heterocyst in cyanobateria.
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उत्तर
In cyanobacteria, heterocyst is specialized and colourless cells and are the site for nitrogen fixation.
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संबंधित प्रश्न
What will be the phenotype of progeny, if a carrier haemophilic female marries a normal male?
Give an example of a human disorder that is caused due to a single gene mutation.
What do sex linked traits appear in males than in females?
Name a disorder a human suffers from as a result of the monosomy of the sex chromosome. Give the karyotype and write the symptoms.
A short stature with webbing of neck and low posterior hairline indicates ______ syndrome.
Down’s syndrome is 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.
The number of Barr bodies present in a female with Turner's syndrome is ______
Why is the frequency of red-green colour blindness is many times higher in males than that in females?
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.
What is the genotype of Turner's Syndrome?
