Question

explain the difference between an organism’s phenotype and genotype
know how many chromosomes are in...

Explanation:

• Genotype: It refers to the genetic makeup of an organism, the set of genes (alleles) it carries. For example, in pea plants, the genotype for flower color could be \( PP \), \( Pp \), or \( pp \), representing the alleles inherited from parents. These genes are in the DNA and determine the potential traits.
• Phenotype: This is the observable physical or biochemical characteristic of an organism, resulting from the interaction of its genotype with the environment. Using the pea plant example, the phenotype for flower color would be purple (if genotype is \( PP \) or \( Pp \)) or white (if genotype is \( pp \)). Other factors like nutrition (for height in plants/animals) or temperature (for fur color in some animals) can also influence the phenotype. In short, genotype is the genetic code, phenotype is the expressed trait.

Answer:

• Genotype: The genetic constitution (set of genes/alleles) of an organism (e.g., \( PP \), \( Pp \), \( pp \) for pea flower color genes).
• Phenotype: The observable physical/biochemical trait of an organism, resulting from genotype - environment interaction (e.g., purple or white pea flowers, influenced by genes and sometimes environmental factors like nutrition/temperature).