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Principles of Inheritance and Variation · Question 65

NEET 2016 (Phase 1)MatchingEasy📈 Topic in 38% papers+4−1
1

Match the terms in Column-I with their description in Column-II and choose the correct option :

  1. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
  2. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
  3. (a)-(ii), (b)-(ii), (c)-(iv), (d)-(iii)
  4. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)

Answer

(1) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

Solution

(a) Dominance: in a heterozygote only one allele (the dominant one) expresses itself (ii)

(b) Codominance: in a heterozygote both alleles express themselves fully (e.g. IAIB) (iii)

(c) Pleiotropy: a single gene influences many characters (e.g. phenylketonuria) (iv)

(d) Polygenic inheritance: many genes govern a single character (e.g. human skin colour) (i)

∴ (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

Answer: (1)

NEET 2016 (Phase 1)

Keep practising — Principles of Inheritance and Variation

2

In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates

  1. Both of the characters are controlled by more than one gene
  2. The two genes are linked and present on the same chromosome
  3. The two genes are located on two different chromosomes
  4. Chromosomes failed to separate during meiosis
NEET 2016 (Phase 1)
3

Which of the following most appropriately describes haemophilia ?

  1. Chromosomal disorder
  2. X-linked recessive gene disorder
  3. Dominant gene disorder
  4. Recessive gene disorder
NEET 2016 (Phase 1)
4

The mechanism that causes a gene to move from one linkage group to another is called

  1. crossing-over
  2. translocation
  3. duplication
  4. inversion
NEET 2016 (Phase 2)
5

If a colour-blind man marries a woman who is homozygous for normal colour vision, the probability of their son being colour-blind is

  1. 0.75
  2. 0.5
  3. 0
  4. 1
NEET 2016 (Phase 2)
6

A true breeding plant is -

  1. produced due to cross-pollination among unrelated plants
  2. one that is able to breed on its own
  3. near homozygous and produces offspring of its own kind
  4. always homozygous recessive in its genetic constitution
Out of syllabusNEET 2016 (Phase 2)
7

The movement of a gene from one linkage group to another is called

  1. inversion
  2. translocation
  3. duplication
  4. crossing over
AIPMT 2015 (Cancelled)
8

Alleles are

  1. true breeding homozygotes
  2. different phenotype
  3. heterozygotes
  4. different molecular forms of a gene
AIPMT 2015 (Cancelled)
9

Multiple alleles are present

  1. on different chromosomes
  2. at the same locus of the chromosome
  3. at different loci on the same chromosome.
  4. on non-sister chromatids
AIPMT 2015 (Cancelled)
10

A man with blood group ‘A’ marries a woman with blood group ‘B’. What are all the possible blood groups of their offsprings?

  1. A and B only
  2. A, B, AB and O
  3. A, B and AB only
  4. O only
AIPMT 2015 (Cancelled)
11

How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?

  1. Eight
  2. Five
  3. Seven
  4. Six
AIPMT 2015 (Cancelled)

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All NEET Botany chapters
Class 11The Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisionTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and Development
Class 12Reproduction in OrganismsSexual Reproduction in Flowering PlantsPrinciples of Inheritance and VariationMolecular Basis of InheritanceStrategies for Enhancement in Food ProductionMicrobes in Human WelfareOrganisms and PopulationsEcosystemBiodiversity and ConservationEnvironmental Issues
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