Genetics is the branch of science which deals with heredity and variation.

Genes express their trait by getting converted into proteins.

Human traits are influenced by the DNAs of both mother and father.

The theory of natural selection was popularised by the book ‘Origin of Species’ written by Charles Darwin.

Darwin explained that adaptations enable one species to produce more offsprings by natural selection.

Hereditary traits are determined by specific genes.

Tt represents a mixed-dominant condition in an offspring.

It is a double helix structure.

Natural selection selects individuals who are most adapted for survival.

Human beings have 46 chromosomes or 23 pairs of chromosomes.