What term describes the way an organism looks as a result of its genes?

• A. Phenotype
• B. Allele
• C. Genotype
• D. Genome

Answer: (A)

Verified step by step guidance

1. Understand the key terms: 'Phenotype', 'Allele', 'Genotype', and 'Genome'. Each of these terms relates to genetics and the expression of traits in organisms.
2. Define 'Phenotype': This term refers to the observable characteristics or traits of an organism, such as its morphology, development, biochemical properties, and behavior. These traits result from the interaction of its genotype with the environment.
3. Define 'Allele': An allele is a variant form of a gene. Different alleles can result in different traits, but the term 'allele' itself does not describe the appearance of an organism.
4. Define 'Genotype': This term refers to the genetic makeup of an organism; in other words, the specific set of genes it carries. The genotype contributes to the phenotype but is not the observable trait itself.
5. Define 'Genome': The genome is the complete set of genes or genetic material present in a cell or organism. It encompasses all of an organism's hereditary information but does not directly describe the organism's appearance.