Apea with yellow seeds is crossed with a pea plant with green seeds. all of the offspring have yellow seeds. the allele for yellow seeds

The allele of yellow seeds is dominant

Since yellow is dominant it would at least be YY

Mitochondria is the cell organelle that produced the energy that is needed in the body system in form of atp, that is why it is called the power house of the cell. energy is needed by the living organisms to carry out the activities which sustain life.  if the mitochondria is destroyed atp will not be produced. if the mitochondria is destroyed, energy production will stop and the affected living organism will not have the energy to carry out the necessary life processes; this will lead to the death of the organism.