Genetics is the study of heredity and variations. The variations are the differences that exist between individuals belonging to the same species. In other words, variations mat be defined as the appearance of new characters in the offsprings which are not found in their parents and might be appeared due to the combining of two alleles coming from two different parents. The variations in sexually reproducing organisms such as animals, plants can be easily observed. An asexually produced organism has one parent and inherits all traits. It is indeed a carbon copy of the parent and is called a clone. Types of variations: Somatic variations: These variations influence the body cells. They appear after birth and are also called acquired characters. These are non-heritable variations. These variations are formed due to environmental factors, use and disuse of organs. Germinal variations: These are heritable variations mostly formed in reproductive cells. Germinal variations are of two types: Continuous variations and discontinuous variations. Continuous variations are formed due to the recombination of alleles as found in sexual reproduction. Discontinuous variations are caused due to the change in the structure or number of chromosomes.

exactly identical to either of their parents.

not exactly identical to either of their parents.

show intermediate characters inherited from both the parents.

HARD

Earn 100

Describe how genetic variation occurs from independent assortment.

Important Questions on Inheritance

MEDIUM

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

Mention one cause of frameshift mutation.

EASY

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

Explain the type of gene mutation in the DNA sequence given below.

ATGCATGC $\to$ ATGAATGC

EASY

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

Explain the type of gene mutation in the DNA sequence given below.

ATGCATGC $\to$ ACGCATGC

EASY

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

Write the difference between Linkage and crossing over.

HARD

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

Had Darwin been aware of Mendel's work, would he been able to explain the origin of variations. Discuss.

MEDIUM

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

The entire human population shows variations.

EASY

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

What are variations? Explain with a suitable example

EASY

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

What are variations? How do they help organisms?

MEDIUM

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

Appearance of antibiotic-resistant bacteria is an example of

MEDIUM

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

Differentiate between Environmental and Genetic variations.

EASY

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

Which one of the following is not important for evolution?

EASY

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

"Like begets like", this applies only to animals.

HARD

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

For the expression of traits, genes provide only the potentiality and the environment provides the opportunity. Comment on the veracity of the statement.

MEDIUM

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

Define variations.

MEDIUM

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

Presence of a slight difference in identical twins supports the hypothesis that

EASY

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

Offsprings are

HARD

Biology>Genetics and Evolution P2>Inheritance>The Production of Genetic Variation

Do variations appear in clones also? How?