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Biology
Principles of Inheritance and Variation
198 questions from 38 papers, each with its answer.
- 198 questions
- 38 papers
- 5.62% of Biology
Sickle-cell anaemia - point mutation
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Which one of the following disorders is caused by the substitution of Glutamic acid (Glu) by Valine (Val) at the sixth position of the beta globin chain of the haemoglobin molecule?
Types of gene interaction/inheritance patterns
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Match List I with List II:
Pick the matching item from Column II for each row.
Column I
- i. Incomplete dominance
- ii. Co-dominance
- iii. Pleiotropy
- iv. Polygenic inheritance
Column II
- a. Human skin colour
- b. Inheritance of flower colour in $Antirrhinum$ sp.
- c. Phenylketonuria disease in humans
- d. ABO blood groups
Correct answer: i → b, ii → d, iii → c, iv → a
Haplodiploidy - sex determination in honeybees
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Which of the following statements are true with reference to the sex-determination in honeybees? I. An offspring formed from the union of a sperm and an egg, develops as a female (queen or worker). II. An unfertilized egg develops as a male by parthenogenesis. III. A male has half the number of chromosomes than that of a female. IV. Males produce sperms by meiosis. V. Honeybees have a haplodiploid sex-determination system. Choose the CORRECT answer from the options given below:
Sickle-cell anaemia - molecular basis (point mutation)
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The sixth mutant codon of beta globin gene causing polymerization of Haemoglobin and change in RBC shape is _______.
ABO blood group inheritance
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What is the probability of having children with 'O' blood group, where both mother and father are heterozygous for 'A' and 'B' blood group, respectively?
Chromosomal sex determination (XO type)
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In a population of a grasshopper species, the chromosome number of some members is 23 and some other members possess 24 chromosomes. The 23 and 24 chromosome-bearing members in this species are _______.
Haplodiploidy - gamete formation in male honeybees
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In which animal do haploid cells divide mitotically to produce gametes?
That is every question in Principles of Inheritance and Variation for this filter.
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