Answer:
He is either not carrying the gene for RP or the RP gene has mutated.
Explanation:
RP or Retina Pigmentosa is an eye defect inherited by a person from a parent. The disease is degenerative as the individual gradually loses his sight. It normally starts off as night-blindness and could go as bad as a total loss of sight.
The mutation of both the RPGR and RP2 genes which are responsible for the function and structure of light-reception in the eye accounts for most cases of Retina Pigmentosa disease.
Answer:
Radon 222.
Explanation:
This is a chemically inert gas that is colourless and odourless but it is radioactive. It is produced by uranium in rock. From seeping through foundation, its accumulation can cause lung cancer. Also, as a radioactive gas, it can be also used to in hospitals to cure ailments which includes tumour , cancer and other diseases.
A deposit of sand or mud built up along, and sloping away from, either side of the flood plain of a river or stream. Expand Also called levee,<span> Examples from the Web for </span>natural levee<span>.</span>
Answer an unit of measurement.
For example: inch, hour, minutes, feet, meters.
Answer:
the answer is true
Explanation:the gravitational pull from the moon is what decides our tides if the moon is further away than the tides are down but if the moon is closer than the tides go up due to the pull of the moon on the water
