PRINCIPLES OF INHERITANCE AND VARIATIONS PART - 1

Inheritance of ABO blood groups is an example of

A: Schleiden and Schwann formulated the theory of inheritance of characters. R:The non living matter also follows the laws of inheritances.

Assertion :- Inheritance is the basis of heredity. Reason :- Inheritance is the process by which characters are passed on from parent to progeny.

Assertion :- Any population has built in variation in characteristics. Reason :- Variations are always stable and inheritable.

Assertion: Mendelian disorders are transmitted to offspring on the same lines as in the principles of inheritance. Reason: The pattern of inheritance of Mendelian disorders cannot be traced in a family by the pedigree analysis.

Assertion : A single mutation may produce a new species . Reason : Mutation may cause major variation in genetic material and these are inheritable .

Assertion: Evolution is adaptation through generations. Reason: Only useful and continuous variations are inheritable.

Some individuals with blood group A may inherit the genes for blond hair, while other individuals with blood group A may inherit the gene for brown hair. This can be best explained by the principle of

Skin color inheritance observed in man is an example of (a) Cytoplasmic inheritance (b) Mendel's inheritance (c) Plastid inheritance (d) Quantitative inheritance

Which one provides correct sequence of events in origin of species according to Darwinism ? 1. Natural selection 2. Variations and their inheritance ? 3. Survival of fittest 4. Struggle for existence