Genotypes and Phenotypes

Genotype

• Definition: A genotype refers to the genetic makeup of an individual based on the genetic material, like DNA, inherited from our parents.
• Level: Genotype is at the genetic level and internal to the organism.
• Analogy: It's like the genes (the genetic material that encodes traits).
• Clarification: The genotype represents the set of genes present in an individual.

Phenotype

• Definition: Phenotype describes observable characteristics of an individual.
• Examples: hair color, skin color, eye color (any observable trait).

Relationship between genotype and phenotype

• The genotype describes the genetic information; the phenotype is the observable expression of that genetic information.
• The transcript emphasizes: genotype = genetic makeup; phenotype = observable traits.

Quick recap / key points

• Genotype = genetic makeup inherited from parents; internal, genetic level.
• Phenotype = observable traits like hair color, skin color, eye color.
• The genotype underlies the phenotype; the phenotype is what you can see or measure.

Quick check questions

• What does the genotype refer to? A: The genetic makeup of an individual based on DNA inherited from parents.
• What does the phenotype refer to? A: Observable characteristics such as hair color, skin color, eye color.
• How are they related? A: The genotype underlies or determines the potential appearance; the phenotype is the observable outcome of that genetic information.