Predation is a relationship that occurs between two organisms dwelling in a biological community, in which one of the organisms (predator) obtains their food by killing and eating the other (prey).
This biological interaction is a winner-loser relationship where the prey is harmed, while the predator benefits. For example: lion and zebra relationship. The lion kills and eats the zebra. The lion benefits, while the zebra is harmed.
X-linked recessive diseases are disorders caused by a mutation on the X chromosome causes the phenotypic expression in males and only when it is homozygous for females.
A small percentage of women can display the disease phenotype on rare phenomenon such as;
X-inactivation that favors inactivation of the normal X chromosome
Turner syndrome (a sex-chromosome aneuploidy in which women have only one X chromosome)