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.

What is Genotype? (Meaning and Definition)

Genotype:
A genotype is the genetic makeup of an organism. It refers to the set of genes or alleles that an individual carries, which determine specific traits or characteristics.

Key Points about Genotype:

1. Genes and Alleles:

   • Genes are segments of DNA that control specific traits.
   • Alleles are different forms or variations of a gene.

2. Homozygous and Heterozygous:

   • Homozygous: Both alleles for a trait are identical (e.g., AA or aa).
   • Heterozygous: The alleles for a trait are different (e.g., Aa).

3. Genotype vs. Phenotype:

   • Genotype: The genetic makeup (like Aa, BB, cc).
   • Phenotype: The physical expression or traits observed (like eye color, height).

Examples of Genotype:

• Eye Color:

  • BB (Homozygous dominant) – Brown eyes
  • Bb (Heterozygous) – Brown eyes
  • bb (Homozygous recessive) – Blue eyes

• Blood Type:

  • AA or AO – Blood type A
  • BB or BO – Blood type B
  • AB – Blood type AB
  • OO – Blood type O

Importance of Genotype:

• Determines the inheritance of traits from parents to offspring.
• Helps in understanding genetic disorders.
• Used in genetic research, breeding, and medicine.

If you need more examples or further clarification on genotypes, feel free to ask!

What is Genotype _ It’s Meaning and Definition A set of alleles that determines the expression.

Basic Genetic Concepts & Terms

What is Genotype? – Meaning and Definition

Genotype refers to the genetic makeup of an organism — specifically, the set of alleles (forms of a gene) inherited from its parents that determine certain traits.

Definition of Genotype:

“Genotype is the complete set of genes or genetic material present in an organism, especially the combination of alleles for a particular trait.”

Key Points:

• Alleles are versions of a gene (e.g., A and a).

• Genotype represents the inherited instructions coded in the DNA.

• It determines how a trait may be expressed, though the environment can also influence expression.

Example of Genotype:

• If the gene for eye color has two alleles — B (brown) and b (blue):

  • A person with BB or Bb genotype has brown eyes.

  • A person with bb genotype has blue eyes.

So, BB, Bb, and bb are genotypes, and brown or blue eyes are the phenotypes (physical traits).

Genotype vs. Phenotype:

In Summary:

Genotype = Set of alleles that determine the potential expression of a trait.

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What is Genotype _ It’s Meaning and Definition A set of alleles that determines the expression.

Gene, Genomics and Genetics M. Sc Biotechnology 2

Multiple Alleles