Advertisements
Advertisements
प्रश्न
Answer the following question.
Both Haemophilia and Thalessemia are blood-related disorders in humans. Write their causes and the difference between the two. Name the category of genetic disorder they both come under.
उत्तर
Both are Mendelian disorders.
- Haemophilia is a sex-linked recessive disorder. The gene for haemophilia is located on X-chromosome. The gene passes from a carrier female to her son.
- Thalessemia is an autosomal linked recessive disease.
- It occurs due to either mutation or deletion resulting in reduced rate of synthesis of one of the globin chains of haemoglobin
- The difference between Haemophilia and Thalessemia is: -In haemophilia, clotting is affected, i.e. there can be a non-stop bleeding even after a minor cut.
- In Thalessemia, anaemia is the characteristic of this disease.
APPEARS IN
संबंधित प्रश्न
What is ‘syndrome’?
Very Short Answer Question.
Give an example of a chromosomal disorder caused due to nondisjunction of autosomes.
Webbed neck is characteristic of ______ syndrome.
A short stature with webbing of neck and low posterior hairline indicates ______ syndrome.
If a colour-blind man marries a woman who is homozygous for normal colour vision, the probability of their son being colour-blind is ______.
In sickle-cell anaemia, shape of RBCs under oxygen tension becomes ______.
Sickle cell anaemia is ______.
Trisomy is represented by ______.
This abnormality occurs due to monosomy (2n - 1); the individual has 2n = 45 chromosomes with 44 + XO genotype.
Read the following and answer from given below:
According to Mendel, one gene controls the expression of one character only. The ability of a gene to have multiple phenotypic effects because it influences a number of characters are an exception. The gene has multiple phenotypic effects because its ability to control two or more characters can be seen in cotton. In cotton, a gene for the lint also influences the height of the plant, size of the ball, number of ovules, and viability of seeds.
Which of the following disorder is an example of genes with multiple phenotypic effects?
