Question
How does a chromosomal disorder differ from a Mendelian disorder?

Answer

S. No.
Mendelian disorder
Chromosomal disorder
(i)
This disorder is mainly due to alteration or mutation in the single gene.
This disorder is caused due to absence or excess or abnormal arrangement of one or more chromosomes.
(ii)
This follows Mendel’s principles of inheritance.
This does not follow Mendel’s principles ofinheritance.
(iii)
This may be recessive or dominant in nature.
This is always dominant in nature.
(iv)
For example, haemophilia, sickle–cell anaemia.
For example, Turner’s syndrome.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Trace the origin and evolution of Man.
  1. Why are herbivores considered similar to predators in the ecological context? Explain.
  2. Differentiate between the following interspecific interactions in a population:
  1. Mutualism and Competition.
  2. Commensalism and Amensalism.
(i) Define the pollination.
(ii) Explain the process of double fertilization.
(iii) Draw a well labelled diagram of fertilized
embryo sac.
Write the causes, symptoms and prevention measures of diphtheria.
Study the table given below and answer the questions that follow:
Species A
Species B
Name of interaction
(+)
(+)
(A)
(-)
(-)
(b)
(+)
(-)
(c)
(+)
(0)
(d)
+ = Beneficial interaction
- = Detrimental interaction
0 = Neutral interaction
Identify a, b, c and d in the given table and explain any three of them with the help of an example each.
Citing lake as an example of a simple aquatic ecosystem, interpret how various functions of this ecosystem are carried out. Make a food chain that is functional in this ecosystem.
What are the major causes of species losses in a geographical region?
Study the flow chart given below and answer the questions that follow:
  1. S strain into mice mice die.
  2. R strain into mice → mice live.
  3. Heat killed S strain + live R strain into mice → A
  4. Heat killed S strain + DNase + live R strain → into mice B
  1. Name the organism and differentiate between its two strains, R and S, respectively.
  2. Write the results A and B obtained in steps (e) and (d), respectively.
  3. Name the Scientist who performed the steps (a), (b) and (c).
  4. Write the specific conclusion drawn from the step (d).
Answer the following questions:
Name the stages in a human female where:
  1. Corpus luteum and placenta co–exist.
  2. Corpus luteum temporarily ceases to exist.
Differentiate between self and cross pollination. Mention two Contrivances of each.