Complex sentence: Tone deafness has a strong negative correlation with belonging to societies with tonal languages, potentially evincing that accurate pitch discrimination is learned or naturally selected; a correlation between allele frequencies and linguistic typological features has been recently discovered, supporting the latter hypothesis.
Split into simpler sentences: Tone deafness has a strong negative correlation with belonging to societies with tonal languages, potentially evincing that accurate pitch discrimination is learned or naturally selected. A correlation between allele frequencies and linguistic typological features has been recently discovered, supporting the latter hypothesis.