What are Mendel's four principles?


Mendel's Four Principles derive from his studies on plants. The four principles include: 1. An organism's traits are determined by its genes. 2. Each organism contains two alleles that create the genotype for a trait. 3. For sexual reproduction, each parent contributes one allele to the offspring. 4. Each genotype contains a dominant allele. If the dominant allele exists in the organism, the allele determines the phenotype.
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