The following equations may be relevant to this problem:

$$

Mutation

Probability of fixation $=1/2$N

Probability of elimination $=1$ probability of fixation

Time to fixation $=$ t $=4$N

Mutation rate $=$

Expected number of new mutations $=2$N

Change in allele frequency after one generation$=$q $=$ p

Allele frequency after t generations: $(1$ $)$t $=$ pt $/$ p$0$

$$

QUESTION

Imagine a monomorphic population of $500$ unicorns $($Pop$\text{'}$n $1)$ that are all homozygous at the gene controlling horns $($HH$).$ In the next$$ generation, a single new hornless $($h$)$ allele arises in the population. What is the H to h mutation rate or $?$