What is Genotype _ It’s Meaning and Definition A set of alleles that determines the expression.
What is Genotype _ It’s Meaning and Definition A set of alleles that determines the expression.
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What is Genotype? – Meaning & Definition
Definition of Genotype:
A genotype is the genetic makeup of an organism, represented by a set of alleles that determine specific traits. It refers to the combination of genes inherited from both parents.
Simple Meaning:
A genotype is the collection of genes (DNA code) inside an organism that influences how traits (like eye color, height, or disease resistance) are expressed.
Key Points About Genotype:
Made up of Alleles – Genes exist in different forms called alleles (e.g., dominant & recessive).
Determines Physical & Biological Traits – Though the phenotype (observable traits) results from both genotype & environment.
Expressed as Letters – Example: BB, Bb, or bb for eye color (where B = brown, b = blue).
Example of Genotypes:
BB – Homozygous Dominant (Brown eyes)
Bb – Heterozygous (Brown eyes, but carrying blue allele)
bb – Homozygous Recessive (Blue eyes)
Difference Between Genotype & Phenotype
| Feature | Genotype | Phenotype |
|---|---|---|
| Definition | Genetic makeup | Physical traits |
| Example | BB, Bb, bb (eye color genes) | Brown or Blue eyes |
| Influence | Inherited from parents | Affected by genes + environment |
Importance of Genotype in Science & Medicine
Used in Genetics & Heredity Studies
Helps in Disease Prediction (Genetic Disorders like Sickle Cell Anemia, Cystic Fibrosis)
Key in Biotechnology & Genetic Engineering
Would you like more details on dominant & recessive traits, or how genotypes impact health?
