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प्रश्न
What are chromosomal disorders?
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उत्तर
Chromosomal disorders are a type of genetic disorder where the abnormality is in the chromosomes themselves, either due to an incorrect number of chromosomes or a structural abnormality in one or more chromosomes. This can lead to various developmental and health issues.
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.
Match the column-I with column-II and re-write the matching pairs.
| Column-I | Column-II |
| 1. 21 trisomy | a. Turner’s syndrome |
| 2. X-monosomy | b. Klinefelter’s syndrome |
| 3. Holandric traits | c. Down's syndrome |
| 4. Feminized male | d. Hypertrichosis |
A male rabbit of genotype 'AABBDDEE' is crossed with a female rabbit of genotype 'aabbddee' to produce F1 hybrid offspring. How many genetically different gametes can be produced by this F1 hybrid?
Match the Column-I with Column-II and choose the CORRECT answer
| Column-I | Column-II | ||
| P. | Klinefelter syndrome | i. | Mutation in autosomal gene |
| Q. | Thalassaemia | ii. | Mutation sex chromosome linked gene |
| R. | Down syndrome | iii. | Trisomy of autosome |
| S. | Colour blindness | iv. | Trisomy of sex chromosome |
A short stature with webbing of neck and low posterior hairline indicates ______ syndrome.
Select the disease which is caused by recessive autosomal genes when present in homozygous conditions.
Placed below is a karyotype of a human being.
On the basis of this karyotype, which of the following conclusions can be drawn: ______
“Genes contain the information that is required to express a particular trait.” Explain.
If a father and son are both defective in red-green colour vision, is it likely that the son inherited the trait from his father? Comment.
Describe Klinefelter’s syndrome.
