This release contains only the music track from Base by Base Episode 304.

Song title: When the Ledger Leans
Original Base by Base episode: 304: Patrilineal Y‑chromosome drive in a Utah pedigree (67% male offspring)
Original episode link: https://basebybase.com/episodes/human-y-chromosome-drive

Article metadata:
Article title: Signatures of sex ratio distortion in humans
Journal: Annual Review of Ecology and Systematics
DOI: 10.64898/2026.02.04.702084
Reference: Baldwin-Brown JG, Wesolowski S, Zimmerman RM, Peterson B, Tristani-Firouzi M, Hernandez EH, Aston KI, Yandell M, Phadnis N. Signatures of sex ratio distortion in humans. Annual Review of Ecology and Systematics. 2026. https://doi.org/10.64898/2026.02.04.702084

Lyrics:
Verse 1
In old pedigree charts and quiet pages kept,
A line runs steady through the years they kept,
Hands that counted births beneath the lamplight's glow,
A pattern standing out where numbers grow.

Pre-Chorus
Whispers in the tally, a tilt that won't relent,
Chance was tested, folded, turned and sent,
Two different lenses finding what the numbers meant.

Chorus
Sixty to twenty‑nine, the ledger leans that way,
Two out of three born under the same father's sway,
Not just rumor in the margins — a signal in the fray.

Verse 2
A Bayesian thread traced through the family line,
A transmission test echoed the same design,
Permutation and simulation pushed back on mere coincidence.
Their concord carved the oddity with steady evidence.

Bridge
What hides inside the chromosomes, a quiet shove or claim,
A subtle bias shaping stories, whispering a name,
It could explain lost pieces, or seeds of change in the frame.

Final Chorus
Sixty to twenty‑nine, the ledger leans that way,
Two out of three born under the same father's sway,
We lift the veil a little more and watch the shadows play,
A portrait drawn from counts and care, a mystery made day.