Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Principles of Inheritance and Variation question

2017 · Q69
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Biology
  4. /Principles of Inheritance and Variation
  5. /2017 · Q69

Principles of Inheritance and Variation question

2017 · Q69

NEETBiologyPrinciples of Inheritance and VariationMCQ+4 / −1
Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement.
  1. A
    Both are due to a qualitative defect in globin chain synthesis
  2. B
    Thalassemia is due to less synthesis of globin molecules
  3. C
    Sickle cell anemia is due to a quantitative problem of globin molecules
  4. D
    Both are due to a quantitative defect in globin chain synthesis
View written solutionFree

Correct answer: B

Sickle cell anaemia is caused due to point mutation in which at the 6th position of beta globin chain, glutamic acid is replaced by valine. Thus, it is a qualitative defect in functioning of globin molecules. Thalassemia is caused due to either mutation or deletion which ultimately results in reduced rate of synthesis of one of the globin chains that make up haemoglobin. Hence, it is a quantitative defect in functioning of globin molecules.

PreviousNext

More from Principles of Inheritance and Variation

  • The genotypes of a Husband and Wife are IAIB and IAi. Among the blood types of their children, how many different genotypes and phenotypes are possible?2017 · MCQ
  • A disease caused by an autosomal primary non-disjunction is :2017 · MCQ
  • Which one from those given below is the period for Mendel’s hybridisation experiments ?2017 · MCQ
  • In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-typeoffspring. This indicates2016 · MCQ
  • Match the terms in Column-I with their description in Column-II and choose the correct option : Includes table2016 · MCQ
  • A cell at telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus the cell is contaning more…2016 · MCQ
  • Pick out the correct statements : (a) Haemophilia is a sex-linked recessive disease. (b) Down's syndrome is due to aneuploidy. (c) Phenylketonuria is an autosomal recessive gene disorder. (d) Sickle cell anaemia is an X – linked recessive…2016 · MCQ
  • Which of the following most appropriately describes haemophilia ?2016 · MCQ