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Match the following with respect to chromosomal mutation
 
  Column I   Column II
a. Tetrasomy (i) AABB
b. Double trisomy (ii) 2n – 1
c. Hypoploidy (iii) 2n + 1
d. Allopolyploidy (iv) 2n + 2
    (v) 2n + 1 + 1

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Important Questions on Principles of Inheritance and Variation

EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation
Chromosomes are made up of
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation

Explain the importance of the following parts of a eukaryotic chromosome:

  • Centromere
  • Telomere

Analyse the role of cell divisions in controlling growth, reproduction and repair in an organism.

EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation
A pair of contrasting characters is called
HARD
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation

Match the following lists:

  List I   List II
A) Change in single base pair of DNA I) Recombination
B) Deletions of base pairs of DNA II) Genetic map
C) Generation of non-parental gene combination III) Point mutations
D) The frequency of recombination between gene pairs on the same chromosome IV) Frame-shift mutations

The correct match is

EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation
What is the number of chromosomes in an individual with Turner's syndrome?
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation
The mechanism that causes a gene to move from one linkage group to another is called:
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation
In meiosis, each of the four daughter cells have one set of chromosomes. Due to the randomness of the process of chromosome separation in meiosis, a larger number of chromosome combinations can form gametes. How many such chromosome combinations in the gametes are possible in case of humans, assuming there is no crossing-over taking place?
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation
Alleles are:
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation
Describe any three types of chromosomes based on the position of the centromere.
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation

Draw the morphology of an ideal eukaryotic chromosome and label the following parts:

1. Chromatid
2. Centromere
3. Nucleolar Organizer
4. Telomere

EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation
A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the F1 plants were selfed the resulting genotypes were in the ratio
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation

Answer the following:

Why do all gametes formed in females have only X chromosomes?

EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation
In his classic experiments on pea plants, Mendel did not use:
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation
The movement of a gene from one linkage group to another is called:
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation
Which ONE of the following statements is INCORRECT?
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation
The two alleles that determine the blood group AB of an individual are located on
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation
How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation
Select the correct pair from the following options :
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation
Where are the genes found?
HARD
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Mutation
Who is known as the father of Genetics?