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Principles of Inheritance and Variation

Long Answer Type

41. A black-colour cock when bred with a white coloured hen produced steel blue coloured offspring and when inbred, black, white and steel-blue coloured progeny were obtained:
(a) This result is genetically explained as.
(b) What will be the expected ratio and proportions of black, steel-blue and white progeny?

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Short Answer Type

42.

Explain the following terms with example
(a) Co-dominance
(b) Incomplete dominance

330 Views

43. Differentiate incomplete dominance and codominance.

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Long Answer Type

44. In man four types of blood groups A, B, AB and O are controlled by three alleles of a gene. What is the mechanism of inheritance of the blood groups ?

274 Views

Short Answer Type

45. What will be the blood groups of the children of following matings ?

(a) IA IB x IBIB
(b) IAI° x IAIB
(c) IA IB x IAIB
(d) I° I° x IAIB.

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Long Answer Type

46.
Child has blood group O. If the father has blood group A and mother blood group B, work out the genotypes of the parents and the possible genotypes of the other offsprings.

(a) Genotypes. Man (IAI°) Mother IBI° and child I°I°.

(b) Blood group of the future offspring. A type, B type, O type and AB type. It is based on the following cross :

Inheritance of blood groups

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47. Who proposed the chromosome theory of inheritance ? What does the Chromosomal theory of inheritance.

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Short Answer Type

48. Correlate between behaviour of genes and chromosomes during meiosis in higher organisms.

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Long Answer Type

49. List the main points of chromosome theory of inheritance.

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Short Answer Type

50. What is Linkage ?

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Previous Year Papers

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Long Answer Type

Short Answer Type

Long Answer Type

Short Answer Type

Long Answer Type

46. Child has blood group O. If the father has blood group A and mother blood group B, work out the genotypes of the parents and the possible genotypes of the other offsprings.

Short Answer Type

Long Answer Type

Short Answer Type

46.
Child has blood group O. If the father has blood group A and mother blood group B, work out the genotypes of the parents and the possible genotypes of the other offsprings.