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प्रश्न
Describe Turner's syndrome.
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उत्तर
- Turner's syndrome is a sex chromosomal disorder caused by the non-disjunction of chromosomes during the formation of an egg.
- The individual born with Turner’s syndrome has 44 autosomes with XO. They are phenotypically female.
- They have short stature (height) and a webbed neck, a lower posterior hairline, a broad shield-shaped chest, poorly developed ovaries and breasts, and low intelligence.
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संबंधित प्रश्न
Give the importance of heterocyst in cyanobateria.
Read the following statements and select the correct option.
i. Genetic disorders are broadly categorised as, Mendelian disorders and chromosomal disorders.
ii. Mendelian disorders are caused due to absence or excess of one or more chromosomes or their abnormal arrangement.
iii. Chromosomal disorders are mainly caused due to alteration or mutation in the gene.
In Klinefelter syndrome, an extra chromosome is a result of non-disjunction of X-chromosome during ____________.
Identify the option that correctly represents the number of chromosomes in Down syndrome.
A short stature with webbing of neck and low posterior hairline indicates ______ syndrome.
HbA and HbS alleles of normal and sickle celled RBC are ______.
Sickle cell anaemia is ______.
Jacob is genetically a carrier of the disorder that affects the shape of the RBCs, as shown in the diagram below. His son James suffers from the same disorder.
- Give the biochemical reason for the disorder that changes the shape of the RBCs, as shown above.
- Draw a Punnett square to show the genotype of the mother of James.
- Name and define the type of 'point mutation' responsible for this disorder.
Which of the following is an example of a chromosomal disorder?
Which list contains only Mendelian disorders?
