| ⇦ | 
| ⇨ |
Sickle cell anaemia is:
Options
(a) caused by substitution of valine by glutamic acids in the beta globin chain of heamoglobin
(b) caused by change in single base pair of DNA
(c) characterised by elongatd sickle like RBCs witha nucleus
(d) an autosomal linked dominant trait
Correct Answer:
caused by change in single base pair of DNA
Explanation:
Sickle cell anaemia is caused by a change in a single base pair of DNA. Sickle cell anaemia is the name of a specific form of sickle-cell disease in which there is homozygosity for the mutation that causes HbS. Sickle-cell disease, or sickle-cell anaemia (or drepanocytosis), is a life-long blood disorder characterized by red blood cells that assume an abnormal, rigid, sickle shape. Sickling decreases the cells flexibility and results in a risk of variouso complications.
Related Questions: - The gynoecium consists of many free pistils in flowers of
- In honey, the main constituent is
- Who discovered jumping genes in maize?
- Number of chlorophyll arranged per reaction centre in the light harvesting
- The partial oxygen pressure is maximum in
Topics: Genetics
(204)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The gynoecium consists of many free pistils in flowers of
- In honey, the main constituent is
- Who discovered jumping genes in maize?
- Number of chlorophyll arranged per reaction centre in the light harvesting
- The partial oxygen pressure is maximum in
Topics: Genetics (204)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply