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An inherited factor that determines a biological characteristic of an organism is called

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Important Questions on Principles of Inheritance and Variation

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
Alleles are:
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation

Match the following lists:

  List - I   List - II
(A) Back cross   It is the genetic make up of an individual.
(B) Test cross (II) An individual is having two different alleles for a single character. Consequently, it will produce two different types of gametes with reference to a gene.
(C) Heterozygote (III) An individual is having two similar or identical alleles for a single character. Hence, it will produce only one kind of gametes with reference to a gene.
(D) Homozygote (IV) If the F1 progeny are mated back to one of their parents.
    (V) The cross between F1 progeny (or heterozygotes) and their recessive homozygous parent.

The correct match is:

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
How many types of gametes can be produced by individual with the genotype AAbb?
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
A testcross is done to find out
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
Which among the following characters selected by Mendel in a pea plant is a recessive character?
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
A true breeding plant is__________
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
If the gene pool of the locus X in the human genome is 4, then what would be the highest possible number of genotypes in a large population?
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
The two alleles that determine the blood group AB of an individual are located on
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
Which of the following character is ignored or not noticed by Mendel in garden pea?
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
An allele that mask the effect of another allele is called
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
Which of the following crosses is a test cross?
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
Monohybrid cross is a cross of ________.
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
Which ONE of the following statements is INCORRECT?
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
What is the ratio for test cross in dihybrid experiment of Mendel?
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
The allele for black hair (B) is dominant over brown hair (b) and the allele for a brown eye (E) is dominant over blue eye e. Out of the offsprings obtained upon mating a black-haired and brown-eyed individual (BbEe) with a brown-haired and brown-eyed individual bbEE, the ratio of brown-haired and brown-eyed individuals to black-haired and brown-eyed individuals is
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
Identify the behavior of genes among the following.
A) Segregate at gamete formation, only one of each pair is transmitted to a gamete
B) Independent pairs segregate independently
C) Genes will not be modified at any time
D) Starch synthesis in pea seeds is not controlled by one gene
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation

Identify the scientists who rediscovered the Mendel's result on the inheritance of characters.

A) de Vries
B) Morgan
C) von Tschermak
D) Sutton

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
A true breeding plant is:
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
If F1 hybrid shows characters of both the parents, then it is due to
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
Choose the correct statement
I) Alleles are unable to blend with other.
II) Genes are units of inheritance and alleles are slightly different forms of the same genes.
III) Mendel laws could be able to provide physical proof for the existence of genes (factors).
IV) Genes occurs in pairs and one pair segregate independently of another pair.