<p>This is from cliffsnotes:</p>
<p>However, because half of the chromosomes of all sister bees are the same
(from their haploid father), they share, on average, 75% of their genes. </p>
<p>Why do the sister bees share 75% of their genes? The explanation is confusing. </p>
<p>Thanks.</p>
<p>So… I’m no expert on how bees reproduce, but my guess is that 50% is all the same for sister bees, as male bees are haploid.
But the other 50% comes from the diploid mother, so for this 50%, the sister bees get one out of two choices for each set of genes, and a half and half chance of 50% gives 25%
50% + 25% = 75%
Correct me if I’m wrong</p>
<p>That makes sense. Thanks.</p>