Mitochondria have their own DNA, which encodes some of the proteins that function within the mitochondria. Explain why the inheritance of mitochondrial DNA is described as "maternal inheritance."
What will be an ideal response?
When fertilization occurs and a sperm enters the secondary oocyte, generally there are no mitochondria in the sperm head. In other words, the contribution of the sperm to the population of mitochondria in the fertilized egg is negligible. As the fertilized egg undergoes cell division, all of the mitochondria in the daughter cells are derived from the mitochondria of the egg. Therefore, all of the mitochondrial DNA in an individual is descended from the mitochondrial DNA of the mother, represented by the mitochondria in the original egg.
You might also like to view...
To map a gene by chromosome walking, the sequence of the gene to be mapped is required
Indicate whether the statement is true or false
While lying awake in bed, you stare at your ceiling, watching a faint sparkling, shimmering movement in the pitch darkness around you. What causes this phenomenon in the absence of visible light?
a. Myopia makes near infrared light perceivable. b. The cosmic microwave background is faintly visible. c. Tonic activity generates illusory visual activity. d. Degeneration of the optic nerve creates false images.
You are interested in the evolution of a particular kind of beetle. What sort of analysis might be useful in your study?
A) Look for similarities between the histone genes of other beetles and the one being studied. B) Find out what kinds of birds eat the beetles, and see what else those birds eat. C) Compare the beetles to other insects in the area. D) Find all the places where this particular kind of beetle lives.
Net energy balance is an important measure because it allows for comparison of biofuels based on the
What will be an ideal response?