That is absolutely not true. Even genetic variants from your father that are not inherited by you still influence your chances of survival and how likely you ar

That is absolutely not true. Even genetic variants from your father that are not inherited by you still influence your chances of survival and how likely you are to pass your genes to an offspring. Imagine your dad has a rare genetic variant, which you don't inherit, that means he is likely to be dead by age 50. Your fitness will be lower as you will lack a father during your childhood. See this famous study: The nature of nurture: Effects of parental genotypes. Science, 359, 424-428 (2018). doi:10.1126/science.aan6877. The summary literally states: "Genetic variants in parents may affect the fitness of their offspring, even if the child does not carry the allele. This indirect effect is referred to as genetic nurture. Kong et al. used data from genome-wide association studies of educational attainment to construct polygenic scores for parents that only considered the nontransmitted alleles."