Inheritance
Inheritance:
Inheritance is the biological process by which characteristics are passed from parents to their offspring through genes. It explains why offspring show similarities to their parents while also having some differences.
Genes and Chromosomes:
Genes are small units of heredity made of DNA.
They are located on structures called chromosomes, which are found in the nucleus of cells.
Each gene carries specific instructions that control traits such as eye colour, height, skin tone, and blood group.
Role of Parents:
Offspring inherit one set of genes from the mother and one set from the father.
This combination of genes determines how a trait is expressed in the child.
Some traits are strongly expressed, while others may remain hidden.
Types of Traits Inherited:
Physical traits include features like hair type, facial structure, and height.
Physiological traits include blood group and metabolism.
Some genetic conditions and susceptibilities to diseases can also be inherited.
Importance of Inheritance:
Inheritance ensures continuity of species across generations.
It creates variation among individuals, which is important for adaptation and evolution.