Women have two X chromosomes.Recessive alleles on one X chromosome are often masked by dominant alleles on the other chromosome.Women will not be affected unless they receive two recessive alleles.
I believe the inability to make saliva would affect digestion drastically. The first phase in the process of digestion comes with saliva - it breaks down some substances in your mouth, because it contains amylase which helps during this process. If it weren't for saliva, you probably wouldn't even be able to swallow food - and even if you did, it would be almost impossible to break it down in your body.
A mutation in DNA affects the entire protiens synthesis process by producing the incorrect amino acids in the wrong places, causing issues with the ability of the organism to survive depending on what the protein is in charge of.
Needed:
Co2
Water
Solar Energy(Sunlight)
Produced:
02
Glucose for the plant to use for survival
