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.
egg whites
While it may seem daunting, a basic meringue is nothing more than a mixture of beaten egg whites and sugar.
The natural flow of rivers can be affected by several factors, such as building dams to provide drinking water, pumping of groundwater, climate change, and building of lands that change how natural water runs into surfaces and into rivers. All of these also disrupt the balance of ecosystem in the area.
Given what we know, we can confirm that Salt marshes are an example of an ecosystem service.
<h3>What is an ecosystem service?</h3>
This describes situations in ecosystems that are beneficial to human life. This example describes the way in which salt marshes provide humans with a steady and stable source of fish that are important to the fishing industry.
Therefore, we can confirm that the Salt marshes are an example of an ecosystem service.
To learn more about ecosystems visit:
brainly.com/question/1673533?referrer=searchResults
The answer would be gas I believe