The most striking example of point mutation is found in a disease called (a) Down’s syndrome (b) sickle cell anaemia (c) thalassaemia (d) night blindness.

The most striking example of point mutation is
found in a disease called
(a) Down’s syndrome (b) sickle cell anaemia
(c) thalassaemia (d) night blindness.
by

1 Answer

Answer :

(b) sickle cell anaemia
by

Related questions

Which of the following is a correct match? (a) Down’s syndrome - 21st chromosome (b) Sickle cell anaemia - X-chromosome (c) Haemophilia - Y-chromosome (d) Parkinson’s disease - X and Y chromosome

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Last Answer : a) Down’s syndrome - 21st chromosome

Pick out the correct statements. (1) Haemophilia is a sex-linked recessive disease. (2) Down’s syndrome is due to aneuploidy. (3) Phenylketonuria is an autosomal recessive gene disorder. (4) Sickle cell anaemia is an X-linked recessive gene disorder. (a) (1), (3) and (4) are correct. (b) (1), (2) and (3) are correct. (c) (1) and (4) are correct. (d) (2) and (4) are correct.

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.A disease caused by an autosomal primary non- disjunction is (a) Klinefelter’s syndrome (b) Turner’s syndrome (c) Sickle cell anaemia (d) Down’s syndrome.

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.Which one of the following conditions though harmful in itself, is also potential saviour from a mosquito borne infectious disease ? (a) Thalassaemia (b) Sickle cell anaemia (c) Pernicious anaemia (d) Leukaemia

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A polygenic inheritance in human beings is (a) skin colour (b) phenylketonuria (c) colour blindness (d) sickle cell anaemia

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In human beings, multiple genes are involved in the inheritance of (a) sickle-cell anaemia (b) skin colour (c) colour blindness (d) phenylketonuria.

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Multiple alleles control inheritance of (a) phenylketonuria (b) colour blindness (c) sickle cell anaemia (d) blood groups.

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An increased serum ‘Iron’ and decreased ‘Fe’ binding capacity are found in (A) Fe-deficiency anaemia (B) Sideroblastic anaemia (C) Thalassaemia (D) Anaemia of chromic disorders

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.Which one of the following conditions in humans is correctly matched with its chromosomal abnormality/linkage? (a) Erythroblastosis fetalis - X-linked (b) Down’s syndrome - 44 autosomes + XO (c) Klinefelter’s syndrome - 44 autosomes + XXY (d) Colour blindness - Y-linked

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.Represented here is the inheritance pattern of a certain type of trait in humans. Which one of the following conditions could be an example of this pattern? (a) Phenylketonuria (b) Sickle cell anaemia (c) Haemophilia (d) Thalassemia

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Iron therapy is ineffective in which of the following conditions: (A) Chronic blood loss (B) Inadequate Fe intake (C) Hypochromic anaemia of pregnancy (D) Thalassaemia minor

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Last Answer : Answer : D

Which of the statements give below is correct with respect to frameshift mutation a) a single nucleotide base change, insertion, or deletion of the genetic material b) Glutamine is replaced by valine c) Sickle cell anemia is an example d) insertions or deletions of a number of nucleotides in a DNA sequence that is not divisible by three.

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Last Answer : d) insertions or deletions of a number of nucleotides in a DNA sequence that is not divisible by three.

Haemoglobin SC disease: a. is common amongst Afro-carribean people b. does not show sickle cells in the blood film. c. causes severe anaemia d. causes retinal vein occlusion

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Last Answer : Answer : B

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The oxygen dissociation curve is shifted to the right with: a. polycythaemia b. pyrexia c. respiratory acidosis d. sickle cell anaemia

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. Sickle-cell anaemia is (a) caused by substitution of valine by glutamic acid in the beta globin chain of haemoglobin (b) caused by a change in a single base pair of DNA (c) characterized by elongated sickle like RBCs with a nucleus (d) an autosomal linked dominant trait.

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Select the correct match. (a) Haemophilia – Y linked (b) Phenylketonuria – Autosomal dominant trait(c) Sickle cell anaemia – Autosomal recessive trait,chromosome -11 (d) Thalassemia – X linked

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Nondisjunction of a chromosome results in which of the following diagnoses? a) Down Syndrome When a pair of chromosomes fails to separate completely and creates a sperm or oocyte that contains two copies of a particular chromosome (nondisjunction) Down syndrome results from three number 21 chromosomes. b) Huntingon Disease Huntington disease is one example of a germ-line mutation. c) Duchenne Muscular Dystrophy Duchenne muscular dystrophy, an inherited form of muscular dystrophy, is an example of a genetic caused by structural gene mutations. d) Marphan Syndrome Marphan Syndrome is a genetic condition that may occur in a single family member as a result of spontaneous mutation.

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Which of the following is NOT characteristic of Down’s syndrome? A. Decreased neutrophil function B. Macroglossia C. Macrodontia D. An increased susceptibility to periodontal disease E. Congenitally missing teeth

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People with Down’s syndrome invariably affected by: (1) Huntington’s disease (2) Alzheimer’s disease (3) Meningitis (4) Brain haemorrhage

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Last Answer : Alzheimer’s disease 

Abnormal chain of amino acids in sickle cells anaemia is (A) Alpha chain (B) Beta chain (C) Gama chain (D) Delta chain

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How many chromosomes per cell does a Down's Syndrome (trisomy 21) victim have?

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Would it be hard for a prosperous, handsome man to fall in love with a woman with Downs' Syndrome?

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Are Down's Syndrome people happier than other people?

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A couple, both severely retarded/down's syndrome/etcetera: should society literally prevent them from having children?

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Last Answer : answer:

What if a baby has Down's syndrome?

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Last Answer : You shouldn't have to worry so much in advance, but of course I understand. Be sure to discuss with your partner what you want. It must be a responsible decision by two people.