Vein because they have valves to prevent back flow of blood.
Answer:
Codominance is when both alleles in the genotype are seen in the phenotype, like a flower that is half blue and half red. Incomplete dominance is a mixture of the alleles, like for example, a mixture of blue and red flower, a purple flower.
Answer:
The term evolution was first used by <u>Charles</u><u> </u><u>Darwin</u>
The amount of energy that is transferred at each level of the food chain is about 10%. This is called the 10% rule (10 per cent rule).
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.
