* Genes: Units of heredity that carry information about traits. They are located on chromosomes and are made up of DNA.
* Genotype: The specific combination of genes an individual has for a particular trait.
* Phenotype: The observable characteristics of an organism, resulting from the interaction of its genotype with the environment.
Examples of phenotypes:
* Eye color: The color of your eyes is a direct result of the genes you inherited from your parents.
* Height: While genes play a significant role in determining height, environmental factors like nutrition also contribute.
* Disease susceptibility: Some genes may increase your risk of developing certain diseases.
Important points:
* Not all genes are expressed: Only a portion of the genes in your body are active at any given time, and the expression of genes can be influenced by environmental factors.
* Phenotypes are not always directly determined by a single gene: Many traits are influenced by multiple genes working together.
* Phenotype can change over time: For example, a person's hair color can change as they age.
In essence, the phenotype is the physical manifestation of your genes, and it is shaped by both your genetic inheritance and environmental factors.
