Answer:
Many years ago scientists believed that protein, DNA is not the genetic material because of many reasons like DNA is made up of only four type of nucleotides while proteins are made up of 20 different types of amino acids. So the building blocks of protein are way high than DNA.
Most of the cellular function is performed by proteins, not DNA. The three-dimensional shape of protein is much higher than nucleic acid. So as protein heterogeneity was high therefore it was considered as a molecule of genetic information instead of DNA.
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The answer is A. Man-made
Answer:
Explanation:
The ecological interaction between the sea anemone and monster crab is said to be a mutualism.
Mutualism is an ecological interaction between two or more species where all the parties benefits.
The sea anemone-boxer crab relationship as described is a mutualism. The anemone provides protection from predators of the crab using its powerful stinging claws. This prevents the crab from enemies. The anemone in return is able to get nutrient from the leftovers of the crab. Both organism serve a need for another and depends on one another for life.
2. For a parasitic situation to surface, one fictional assumption would be that, the boxer crab keeps getting protected by the stinging claws of the Anemone. The boxer crab on the other hand does not leave any leftover behind for the anemone to feed on.
In parasitism, only one specie benefits while the other loses from the relationship. If the boxer crab feeds without leaving any remnants, the sea anemone would get no nourishment. This might hamper the survival of this specie.