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The change in genotype of male and female parents during crosses is known as

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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:
MEDIUM
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?
HARD
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
Explain Hardy Weinberg Principle with the help of a Punnett square.
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
A true breeding plant is:
EASY
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?
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
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>Heredity and Variation
Give any two traits studied by Mendel.
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation

A round seeded tall pea plant is crossed with round seeded dwarf plant and obtained progeny are with following phenotypes
3 - Tall, Round
3 - Dwarf, Round
1 - Tall, Wrinkled
1 - Dwarf, Wrinkled

The possible genotype of parents:

EASY
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?
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
An allele that mask the effect of another allele is called
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
According to Mendel, ........................ segregate and ..................... assort independently.
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
Monohybrid cross is a cross of ________.
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
In human beings, brown eye (B) is dominant over blue eye (b). A brown-eyed couple has a blue-eyed child. What are the possible genotypes of the couple?
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
Define the term ‘recessive’.
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
What is the possible genotypic ratio in F2 generation if a plant producing red flowers RR is crossed with another plant of the same species that produces white flowers rr?
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
The maximum number of different gametes of the pollens produced by a tall pea plant with round, yellow, seeds of the genotype TtRrYY, if the three loci are unlinked, would be
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation
Some of F2 progeny are formed during dihybrid cross between round and yellow o↑ and wrinkled and green +∘ pea plants. Their genotypes are:
MEDIUM
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:

EASY
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
MEDIUM
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.