Answer:
They lose their end walls so the xylem forms a continuous, hollow tube. They become strengthened by a substance called lignin . Lignin gives strength and support to the plant.
The ultimate goal of energy metabolism is produce the compound called ATP.
<h3>What is ATP?</h3>
This is known as Adenosine triphosphate and it is referred to as the energy currency of the cell.
It is formed during energy metabolism from energy-yielding nutrients such as carbohydrates etc which was why it was chosen as the most appropriate choice.
Read more about ATP here brainly.com/question/897553
I believe a completely filled square represents a male affected with a disease.
A half-filled circle represents a carrier female, while a a half filled square represents a carrier male and a completely filed circle represents an infected female with a disease. Normally these are shown in a human pedigree which shows the occurrence an appearance or phenotype of a particular gene or organisms and its ancestors from one generation to the next.<span />
Mutations result from an error in DNA replication, should it be from an alien source (like radiation) or simply a mistake in replication.
Migration of organisms to a new population would alter the DNA by adding new genes, but it would not mutate them.
