Aman with red hair (recessive) marries a woman with black hair (dominant) whose mother had red hair. what are the chances that their first child will have red hair? a man with red hair (recessive) marries a woman with black hair whose mother had red hair. what are the chances that their first child will have red hair or black hair

Because the mother had red her it means the woman is heterozygous and the man is homozygous recessive so there is a 50% chance of having a child with red hair and a 50% chance of having a child with black hair.

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.