A gene is said to be dominant if?

Important Questions on Principles of Inheritance and Variation

EASY

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation

Which one from those given below is the period for Mendel's hybridization experiments?

EASY

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation

In his classic experiments on pea plants, Mendel did not use:

EASY

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation

According to Mendel, ........................ segregate and ..................... assort independently.

EASY

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation

The number of contrasting characters studied by Mendel for his experiments was:

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

How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits?

EASY

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation

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>Heredity and Variation

A pure breeding pea plant with round yellow seeds was crossed with pea plant having wrinkled green seeds. On selfing of ${\mathrm{F}}_1$, hybrid of his cross, $64$ progenies were obtained in ${\mathrm{F}}_2$ generation. Find out the number of ${\mathrm{F}}_2$ progenies showing non-parental characters.

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

Alleles are:

EASY

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

Among the following characters, which one was not considered by Mendel in his experiments on pea?

EASY

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation

Which of the following characters not studied by Mendel in his Pea plant experiment?

HARD

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation

A cross wạs carried out between two individuals, heterozygous for two pairs of genes. Assuming segregation and independent assortment, the number of different genotypes and phenotypes obtained respectively would be

MEDIUM

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation

What is the possible genotypic ratio in ${\mathrm{F}}_2$ generation if a plant producing red flowers $\left(\mathrm{RR}\right)$ is crossed with another plant of the same species that produces white flowers $\left(\mathrm{rr}\right)?$

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 ${\mathrm{F}}_1$ plants were selfed the resulting genotypes were in the ratio

EASY

Biology>Genetics and Evolution>Principles of Inheritance and Variation>Heredity and Variation

If ${\mathrm{F}}_1$ 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.