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प्रश्न
State any two symptoms of Down’s syndrome.
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उत्तर
Symptoms of Down syndrome are as follows :
1) Most children showed typical facial features with a fold of skin (epicanthal skin fold) over the inner corner of the eye. This results in downward slanting of eyelids
2) The face is typically flat and rounded flat nose, mouth open and tongue protruding
3) Mental retardation
4) Due to poor skeletal development, they have short stature and relatively small skull, the palate is arched.
5) Flat hand with characteristic crease which runs all the way across the palm (simian crease).
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संबंधित प्रश्न
Mention any two autosomal genetic disorders with their symptoms.
The genotype of a person withTumer's syndrome will be:
(i) 44+XXY
(ii) 44+XYY
(iii) 44+XO
(iv) 44+XXYY
Which of the following characteristics are observed in a person suffering from Turner syndrome?
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.
Conditions of a karyotype 2n ± 1 and 2n ± 2 are called ______.
Sickel-cell anaemia is an example of ______.
Select the disease which is caused by recessive autosomal genes when present in homozygous conditions.
Failure of segregation of chromatids during cell division results in the gain or loss of chromosomes, this is called as ______.
It is said, that the harmful alleles get eliminated from population over a period of time, yet sickle cell anaemia is persisting in human population. Why?
Which of the folowing is a correct match?
