Advertisements
Advertisements
प्रश्न
State any two symptoms of Down’s syndrome.
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).
APPEARS IN
संबंधित प्रश्न
Attempt any TWO of the following:
‘The gene for sickle cell anaemia in homozygous condition is lethal and produces sickle cell trait in heterozygous carrier’. Explain.
What do sex linked traits appear in males than in females?
Very Short Answer Question.
Give an example of a chromosomal disorder caused due to nondisjunction of autosomes.
Give an account of one Mendelian and one chromosomal disorder you have studied.
A disease caused by an autosomal primary non-disjunction is ______.
A woman with albinic father marries an albinic man. The proportion of her progeny is ______.
Genes for cytoplasmic male sterility in plants are generally located in ______.
Failure of segregation of chromatids during cell division results in the gain or loss of chromosomes, this is called as ______.
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 a/an ______
Which of the following is called as Royal disease?
