Question
How are genetic disorders broadly classified? Differentiate between them. Explain by giving one example for each.
✓
Answer
These are disorders or illness caused by one or more abnormlities in the autosomes or sex chromosomes of the person. Thus, referred to as autosomal disorders or sex-linked disorders, respectively.
The generic disorders are divided into:
Differentiate between Mendelian and Chormosomal disorders are:
The generic disorders are divided into:
Differentiate between Mendelian and Chormosomal disorders are:
| S.No. | Mendelian disorders | Chormosomal disorders |
| (i) | The disorders are caused by allelic abnormalities. | The disorders are caused by chromosomal abnormalities |
| (ii) | Allelic abnormalities develop due to mutations. | Chromosomal abnormalities develop due to defective synapsis and disjunction. |
| (iii) | The defect can be predicted through pedigree analysis. | The defect can be known through amniocentesis. |
| (iv) | The disorder is transmitted to the progeny. | The disorder is rarely transmitted. |
| (v) | Examples: Haemophilia, Cystic fibrosis, Colour blindness, Sickle-cell anaemia, Thalassemia, Phenylketonuria, etc. | Examples: Down's syndrome, Turner's syndrome, Klinefelter's syndrome, etc. |
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A bright student of class XI, under peer pressure started taking drugs. He started neglecting studies, misbehaving with parents and friends in school. The principal of school counselled him, but it had no effect. His parents took him to a rehabilitation center. After a few months, he came back recovered.
- What is drug abuse?
- Name some commonly abused drugs and their source.
- What should be the attitude of his parents after his return?
- What values did the principal reflect through his initiative?
- Explain primary productivity and the factors that influence it.
- Describe how do oxygen and chemical composition of detritus control decomposition.
There is greater biodiversity in tropical /subtropical regions than in temperate region. Explain.
Does light factor affect the distribution of organisms? Write a brief note giving suitable examples of either plants or animals.
Give an account of the methods used in sequencing the human genome.
What do you mean by ecological pyramid? Describe the pyramid of biomass in grassland with the help of diagram.
The following is the illustration of the sequence of ovarian events (a – i) in a human female.
“Maintenance of personal and public hygiene is necessary for prevention and control of many infectious diseases”. Justify the statement giving suitable examples.
Study the following flow chart. Name the hormones involved at each stage. Explain their functions.
Hypothalamus → Pituitary → Testes → Sperms.
Hypothalamus → Pituitary → Testes → Sperms.
Explain the surgical method of contraception with the help of a labelled diagram.###Write the name of a surgical contraceptive method and explain it which can be adopted by the male member of the couple.