Random mutations are the ultimate source<span> of </span>genetic<span> variation. Mutations are likely to be rare and most mutations are neutral or deleterious, but in some instances the new alleles can be favored by natural selection.</span>
<span>The nurse should let the patient know that with every pregnancy, there is actually 50 percent chance of a carrier passing on under this condition or being a carrier.
But not all pregnancies may result to this. The sex of the child will have a great impact on the outcome and it cannot be as a result of the previous pregnancy.
Haemophilia is being termed as an inherited genetic disorder. It results from much to people who bleed longer after an injury. There are two types of hemophilia.
For example, hemophilia A which occurs if there is no enough clot factor VIII. The other one is hemophilia B which occurs if there is no enough clot factor IX.</span>
Photosynthesis takes in carbon dioxide and releases oxygen as a product, so the answer is D.