MCQ
Following pedigree chart shows
- ✓Recessive and autosomal
- BRecessive and sex-linked
- CDominant and sex-linked
- DDominant and autosomal
✓
Answer
Correct option: A.
Recessive and autosomal
a
Given pedigree analysis indicates the transmission of autosomal recessive trait from parents to their offsprings
Given pedigree analysis indicates the transmission of autosomal recessive trait from parents to their offsprings
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(i) Sickle-cell anaemia is caused by the substitution of A by B at 6th position of the C globin chain of Haemoglobin.
(ii) In phenylketonuria, the individual lacks an enzyme that converts the amino acid phenylalanine into D.
(iii) Failure of segregation of chromatids during cell division cycle results in the gain or loss of a chromosome called E.
(iv) In F, there is an increase in a whole set of chromosome in an organism.
(v) Down's syndrome is genetic disorder because of presence of an additional copy of chromosome number G.
(vi) In H syndrome, there is an additional copy of X-chromosome resulting into a karyotype of 47, XXY.
(vii) In I syndrome, there is an absence of one of the X-chromosome, i.e. 45 with XO.
(viii) The traits that are generally controlled by 3 or more genes are called J traits.
(ix) When single gene exhibit multiple phenotypic expression, it is called K gene.
(x) In honey bee, females are L having M chromosome and males are N having 16 chromosome. This is called O sex-determination system.
(xi) Colour blindness is P - linked Q disorder. This defect is due to mutation in certain genes present in R chromosome.
(xii) Thalassemia is S-linked T disease. It is controlled by two closely linked genes U and Von chromosome W of each parent.
choose the correct option given below :-
(i) Sickle-cell anaemia is caused by the substitution of A by B at 6th position of the C globin chain of Haemoglobin.
(ii) In phenylketonuria, the individual lacks an enzyme that converts the amino acid phenylalanine into D.
(iii) Failure of segregation of chromatids during cell division cycle results in the gain or loss of a chromosome called E.
(iv) In F, there is an increase in a whole set of chromosome in an organism.
(v) Down's syndrome is genetic disorder because of presence of an additional copy of chromosome number G.
(vi) In H syndrome, there is an additional copy of X-chromosome resulting into a karyotype of 47, XXY.
(vii) In I syndrome, there is an absence of one of the X-chromosome, i.e. 45 with XO.
(viii) The traits that are generally controlled by 3 or more genes are called J traits.
(ix) When single gene exhibit multiple phenotypic expression, it is called K gene.
(x) In honey bee, females are L having M chromosome and males are N having 16 chromosome. This is called O sex-determination system.
(xi) Colour blindness is P - linked Q disorder. This defect is due to mutation in certain genes present in R chromosome.
(xii) Thalassemia is S-linked T disease. It is controlled by two closely linked genes U and Von chromosome W of each parent.
choose the correct option given below :-
Statement I: Humoral immune response is responsible for the graft rejection.
Statement II: Colostrum has abundant IgM antibodies.
Statement II: Colostrum has abundant IgM antibodies.
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Mechanisms of breathing vary among different groups of animals depending mainly on their habitats and levels of organisation, which option contain all correct statements ?
(i) Lower invertebrates like sponges, coelenterates, flatworms, etc., exchange O2 with CO2 by simple diffusion over their entire body surface.
(ii) Earthworms use their moist cuticle for exchange O2 with CO2.
(iii) Insects have tracheal tubes to transport atmospheric air within the body.
(iv) Special vascularised structures called gills are used by most of the aquatic arthropods and molluscs.
(v) Terrestrial forms use vascularised bags called lungs for the exchange of gases.
(vi) Among vertebrates, fishes use gills whereas reptiles, birds and mammals respire through lungs and also use skin for respiration.
(i) Lower invertebrates like sponges, coelenterates, flatworms, etc., exchange O2 with CO2 by simple diffusion over their entire body surface.
(ii) Earthworms use their moist cuticle for exchange O2 with CO2.
(iii) Insects have tracheal tubes to transport atmospheric air within the body.
(iv) Special vascularised structures called gills are used by most of the aquatic arthropods and molluscs.
(v) Terrestrial forms use vascularised bags called lungs for the exchange of gases.
(vi) Among vertebrates, fishes use gills whereas reptiles, birds and mammals respire through lungs and also use skin for respiration.
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