Heredity

IMPORTANT

Heredity: Overview

The transfer of traits from parents to offspring through sexual or asexual reproduction is known as heredity. In this topic, Mendel’s Law of Inheritance explains how these traits will be inherited from parents.

Important Questions on Heredity

EASY
IMPORTANT

Give the appropriate biological or technical term for the following-

The condition in which a pair of chromosomes carries similar alleles of a particular character.

MEDIUM
IMPORTANT

The tall tea plant bearing red colour flowers (TTRR) is crossed with dwarf pea plant bearing white flowers (ttrr). Represents the result obtained in F2 generation of dihybrid cross with the help of checker board. Mention the ratio of different plants obtained in F2 generation.

EASY
IMPORTANT

Why are traits acquired during its lifetime of an individual not inherited?

MEDIUM
IMPORTANT

In the green gram, the development of two flowers at the axial position is a recessive character, while the development of a single flower at the axial position is a dominant character. If the dominant character is represented by 'SS' and the recessive by 'ss' then answer the following question.

In the green gram plant, only a single flower at the axial position is observed in F1 progeny because it is a _____.

MEDIUM
IMPORTANT

In the green gram, the development of two flowers at the axial position is a recessive character, while the development of a single flower at the axial position is a dominant character. If the dominant character is represented by 'SS' and the recessive by 'ss' then answer the following question.

What will be set of genes present in the F1 generation?

MEDIUM
IMPORTANT

In the green gram, the development of two flowers at the axial position is a recessive character, while the development of a single flower at the axial position is a dominant character. If the dominant character is represented by 'SS' and the recessive by 'ss' then answer the following question.

Phenotype refers to the _____ of an individual.

MEDIUM
IMPORTANT

Name the cell organelle/structure, which is commonly called heredity vehicles.

EASY
IMPORTANT

What is the difference between genotype and phenotype?

EASY
IMPORTANT

 Attached earlobes is a recessive trait in humans.

EASY
IMPORTANT

What are the cells containing a single set of chromosomes called? (Answer in a single word)

EASY
IMPORTANT

The '2n' number of chromosomes in a human female represents:

MEDIUM
IMPORTANT

How many chromosomes are there in meiocytes of human beings? (Write in numbers)

EASY
IMPORTANT

Law of independent assortment can be explained by monohybrid cross.

EASY
IMPORTANT

The phenotypic ratio of Mendel's monohybrid cross in F2 generation is

EASY
IMPORTANT

Gender of a child is determined by the male partner of the couple.

MEDIUM
IMPORTANT

The DNA fragments can be isolated using the technique called Agarose gel electrophoresis.

EASY
IMPORTANT

Observe the table in which size of different DNA fragments are given and answer the question:

DNA A B C
Size (in base pairs) 700 1500 3000

In the process of separating DNA fragments which fragments moves faster?

EASY
IMPORTANT

 Sperm cells contain an X or a Y chromosome. 

EASY
IMPORTANT

Which chromosome is only found in a man?

MEDIUM
IMPORTANT

A pure dominant pea plant producing round-yellow seeds is crossed with pure recessive pea plant producing wrinkled-green seeds. The number plants bearing round-green seeds in the F1 generation of Mendel's experiment is