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| Description: In many cases, the amount of protein encoded by a single dominant allele is sufficient to produce the normal phenotype. In this example, the normal phenotype is purple flower colour in a pea plant. The normal allele (P) encodes protein P, an enzyme needed for the synthesis of purple pigment. A plant with one or two copies of the normal allele produces enough pigment to produce purple flowers. In a pp homozygote, the complete lack of the normal protein results in white flowers.
Picture Stats: Views: 1650 Filesize: 90.82kB Height: 818 Width: 850 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=528 Keywords: How genes produce proteins that determine traits in a simple dominant-recessive relationship. |