Lactose tolerance
One example of a beneficial mutation in genetics is the mutation that causes sickle cell anemia. This mutation provides some protection against malaria, making individuals with this mutation less susceptible to the disease.
Mutation leads to variation which in some cases is helpful to insects, birds, etc (except humans) to blend in with their environments so there is better survival
An example of a favorable mutation is the development of lactase persistence in some human populations, which allows individuals to digest lactose into adulthood. This mutation provides a selective advantage in societies where dairy consumption is common.
Deletion
Black leopards are a helpful mutation. It allows leopards that live in dense cover to camouflage to the shadowy forest. This is not entirely accurate, since a spotted leopard hunts just as well, if not better than a melanistic (read: black) leopard. This does not make it anymore helpful than blue eyes as opposed to green. Though undoubtedly beautiful. Also I should add that, while some do, most leopards live on the savanna and not in forests, and they rely more on the difference in the color of their fur to better camouflage themselves. Nice try though. While evolutionary theory will tell you that you are a product of random beneficial genetic mutations, we have NEVER observed one in anything other than single celled organisms, or bacteria.
The synonyms for salubrious is health-some, healthy, hygienic, salutary, wholesome, beneficial, bracing, curative, desirable, good, healthful, and helpful.
environment and the specific role of the gene that is mutated. In some cases, a mutation may provide an advantage, allowing an organism to better survive and reproduce. In other cases, a mutation may be harmful if it disrupts essential functions or causes diseases.
What some desirable food habits
it depends on what mutation you speak of. some are and some are not.
If a mutation happens, it will be helpful, harmful or neutral. Whether they are passed on to offspring depends on several things.Obviously, whether the organism gets a chance to reproduce.Whether the organism manages to survive long enough to reproduce, which it is unlikely to do if the mutation is harmful.Whether the gametes which are successful in the process of fertilization happen to contain that gene.
A point mutation, in which one nitrogen base in a codon is substituted for another, may have no effect on an organism. This is true if the base substitution does not change the amino acid that the codon represents, or if the mutation occurs in a non-critical location in the protein so that the protein's structure is not changed significantly and the protein is still able to function.
Some cancers show a genetic predisposition - for example BRCA Mutation a form of breast CA.