EASY
Earn 100

Define first filial generation.

Important Questions on Principles of Inheritance and Variation

HARD
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene
Explain Hardy Weinberg Principle with the help of a Punnett square.
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene
Describe the Mendel's laws of inheritance.
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene
In dogs, the barking trait is dominant over the silent trait. Using Punnet Square, work out the possible puppies born to two barking parents with genotype (Rr). 
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene
Explain the law of dominance using a monohybrid cross.
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene
Assertion (A): Two copies of the gene are the two allelic forms of which, one allele produces a non-functional enzyme.
Reason (R): The modified allele is generally the recessive allele.
The correct option among the following is:
HARD
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene
A homozygous tall pea plant is crossed with its homozygous recessive parent. Find out the genotypic and phenotypic ratio with the help of Punnet square method.
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene
What is a monohybrid cross? Explain the types of phenotype and genotype found in the F2 generation with the help of a checkerboard.
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene
Discuss Mendel's law of dominance.
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene

In mice black coat color (allele 'B') is dominant to brown coat color (allele 'b'). The offspring of a cross between a black mouse (BB) and a brown mouse (bb) were allowed to interbreed. What percentage of the progeny would have black coats ?

MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene
The ratio of long-winged and vestigial winged Drosophila are formed when a pure long-winged (dominant) and a pure vestigial winged (recessive) Drosophila are crossed:
HARD
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene
Explain the law of dominance using a monohybrid cross.
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene
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?
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene

Observe the figure given below showing Mendel’s experiment using pea plants.

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Which are the laws proposed by Mendel based on these observations?   

MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene

What is a dominant character? How did Mendel prove through his experiments that the inherited characters are transmitted independently from one generation to the next?

EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene

Observe the figure given below showing Mendel’s experiment using pea plants.

Question Image

Identify the cross.

EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene
A man with blood group A marries a woman with blood group B. What will be the genotype of man and woman if one of their child is born with blood group O? Show the type of progeny formed with help of Punnett square.
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene
Describe Mendel's law of segregation giving example.
HARD
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene
F1 progeny of pea plant bearing violet flowers and snapdragon plant bearing red flowers were selfed to produce their respective F2 progeny. Compare the phenotype, genotype and pattern of inheritance of their respective F2 progeny.
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Inheritance of One gene
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>Inheritance of One gene
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