Define the term phenotype.

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Definition**: The term "phenotype" refers to the observable physical characteristics or traits of an individual organism. This includes features such as color, height, shape, and other visible traits.

2. **Relationship with Genotype**: The phenotype is influenced and determined by the organism's genotype, which is the genetic makeup or the specific alleles present in the organism. The genotype consists of the genes inherited from the parents.

3. **Examples of Phenotype**: Common examples of phenotypic traits include:
- Color (e.g., flower color, skin color)
- Height (e.g., tall or short plants/animals)
- Shape (e.g., round or wrinkled seeds in plants)

4. **Genetic Influence**: Each phenotypic trait is controlled by specific genes. For instance, in the case of height in pea plants:
- The genotype "TT" (homozygous dominant) results in a tall phenotype.
- The genotype "tt" (homozygous recessive) results in a short phenotype.

5. **Conclusion**: In summary, the phenotype is the physical expression of the genotype, and it encompasses all observable traits of an organism.

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