Because of the fact that female mammals have chromosomes from both parents (from the father and from the mother) and all cells have the same inactivated X chromosome female mammals are considered to be mosaic <span>of the maternal and paternal cells.</span>
Independent: The second group is not given the drug.
Dependent: Dr. Smith wants to examine weather a new drug increases the maze running performance of older rats.
Constants: Dr. Smith teaches two groups of older rats to find a piece of tasty rat chow in the maze.
Answer:
- strand RNA rhabdoviruses.
Explanation:
Rhabdovirus is the large family of the single stranded negative sense of the RNA virus that has the capability to utilize the ecological niche. These viruses can affect the animals.
The RNA that are present in the negative-sense virus cannot be infectious as this virus must be transcribe into the positive sense RNA. The positive sense strand of this virus has the ability to be translated in the viral genome. The RNA dependent RNA polymerase.
Thus, the correct answer is option (3).