1.Reproduction
2.Heredity
3.Variation in fitness or organism
4.variation in individual characters among members of the population
Answer:
Your answer should be C I believe
The answer is Tyrosine. Conditionally essential amino acids is when non essentials amino acid becomes essential. In Phenylketonuria Tyrosine becomes a conditionally essential amino acid that must be provided in the diet. Phenylalanine accumulates and fails to convert to tyrosine during this condition.
