Nothing

```
# Change the geno probs in typed.genos to reflect a given allele freq
adjust_geno_probs <- function(typed.genos, afreq = 0.01) {
# Also, condition the likelihood on the event that all of the founders
# together carry at most one mutation (otherwise the likelihood for the null
# model won't match the likelihood calculated below). So afreq needs to be
# small for this conditional likelihood to be approximately the same as the
# likelihood function for the full segregation analysis model.
for (i in seq_along(typed.genos)) {
tg <- typed.genos[[i]]
nfounders <- sum(tg$p) / 2
if (abs(nfounders - round(nfounders)) > 1e-5) {
warning("Non-integer number of founders for family ", i, call. = FALSE)
}
nfounders <- round(nfounders)
tg$p <- tg$p * afreq * (1 - afreq)^(2 * nfounders - 1)
f <- function(x) all(x[-1] == 0)
j <- which(apply(tg, 1, f))
prob <- (1 - afreq)^(2 * nfounders)
if (length(j) == 0) {
x <- c(prob, rep(0, ncol(tg) - 1))
tg <- rbind(x, tg)
}
if (length(j) == 1) {
tg$p[j] <- tg$p[j] + prob
}
if (length(j) > 1) {
j <- j[1]
tg$p[j] <- tg$p[j] + prob
warning("Repeated genotype combinations for family ", i, call. = FALSE)
}
# Condition on the event that the genotype combinations in tg are approx
# exhaustive
tg$p <- tg$p / sum(tg$p)
typed.genos[[i]] <- tg
}
typed.genos
}
```

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