Advertisements
Advertisements
प्रश्न
Identify ‘a’, ‘b’, ‘c’, ‘d’, ‘e’ and ‘f’ in the table given below:
| S. No. | Syndrome | Cause | Characteristics of affected individuals | Sex (male/female/both) |
| 1. | Down’s | Trisomy of 21 |
‘a’ |
‘b’ |
| 2. | ‘c’ | XXY | Overall masculine development | ‘d’ |
| 3. | Turner’s | 45 with XO |
‘e’ |
‘f’ |
Advertisements
उत्तर
| No | Syndrome | Cause | Characteristics of affected individuals |
Sex/Male/Femal e/Both |
| 1. | Down’s | Trisomy of 21 |
(i) Broad forehead (ii) Permanently open mouth, protruding and furrowed tongue and projecting lower lip. |
Both |
| 2. | Klinefelter’s | XXY | Overall masculine development | Male |
| 3. | Turner’s | 45 with XO |
(i) Poorly developed ovaries, webbed neck, broad chest with under developed breasts and below average intelligence. (ii) Body hair absent |
Female |
APPEARS IN
संबंधित प्रश्न
Give an example of a human disorder that is caused due to a single gene mutation.
Write the scientific name of the fruit-fly. Why did Morgan prefer to work with fruit-flies for his experiments? State any three reasons.
Mention any two autosomal genetic disorders with their symptoms.
During a medical investigation, an infant was found to possess an extra chromosome 21. Describe the symptoms the child is likely to develop later in the life.
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.
Give an account of one Mendelian and one chromosomal disorder you have studied.
Following list indicates various genetic diseases. Identify the diseases that are not caused due to single gene defect.
Huntington's chorea, alkaptonuria, Sickle cell anaemia, Down syndrome, thalassemia, Taysachs disease, Turner syndrome, cystic fibrosis, haemophi Lia, Klinefelter syndrome, albinism
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?
Give the genotype of Klinefelter’s syndrome.
Describe Klinefelter’s syndrome.
