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The Morgan–Beadle Genetics House Site

One vanished Pasadena address passed from Thomas Hunt Morgan’s genetics household to George Beadle’s.
Context-only story
Historic context only. The associated home no longer survives, and the current parcel is not a visitor destination.
The location shown is deliberately coarse or withheld. It must not be used to identify a private property.
Directions unavailable
STATUS
Demolished
ACCESS
No public access
PUBLIC LOCATION
San Pasqual Street area (approximate)
MAP PRECISION
Approximate area
EVIDENCE
Good working evidence
CHECKED
Aug 22, 2026
THE NERD PAYOFF

Why This Pin Earned Its Place

Few domestic sites express scientific lineage so clearly: chromosome genetics and biochemical genetics occupied the same address across generations.
01
Thomas and Lilian Morgan household
02
Later George Beadle residence
03
Original Greene & Greene house demolished
PEOPLE AND IDEAS HERE

The Human Network Behind the Address

The address no longer resolves cleanly; evidence aligns it with the Arturo Bandini House area, whose original Greene & Greene building was demolished in the 1960s.
Thomas Hunt Morgan
1866–1945
resident · Approximately 1928–1945
Morgan lived here while building Caltech biology and the chromosome theory tradition.
Lilian Vaughan Morgan
1870–1952
resident · Morgan household years
A published geneticist in her own right, Lilian shared the scientific household.
George Beadle
1903–1989
resident · Documented 1950s residence
Beadle later lived at the same address during his Caltech leadership.
Interaction circle
• Morgan’s school connects to Beadle, Delbrück, Horowitz, Edward B. Lewis, and Barbara McClintock.
• Genetics work here must not be conflated with Robert Millikan’s separate eugenics activity.
LOOK CLOSER

The Gloriously Specific Details

Location history
• The address no longer resolves cleanly; evidence aligns it with the Arturo Bandini House area, whose original Greene & Greene building was demolished in the 1960s.
Interaction circle
• Morgan’s school connects to Beadle, Delbrück, Horowitz, Edward B. Lewis, and Barbara McClintock.
• Genetics work here must not be conflated with Robert Millikan’s separate eugenics activity.
Map disclosure
• The marker is a coarse area point, not the residence or parcel.
CONFIRMED · HISTORICAL ASSOCIATION
The address no longer resolves cleanly; evidence aligns it with the Arturo Bandini House area, whose original Greene & Greene building was demolished in the 1960s.
INTERPRETATION · IDEA NETWORK
Few domestic sites express scientific lineage so clearly: chromosome genetics and biochemical genetics occupied the same address across generations.
UNDERSTAND THE PLACE

Context Without a Doorstep

Public location
San Pasqual Street area (approximate)
Hours
Not applicable to a context-only record. A related public institution may have its own event schedule.
Access
Historic context only. The associated home no longer survives, and the current parcel is not a visitor destination.
Map disclosure
The marker identifies a general area, not a house or parcel.
Photography
Do not photograph residents, windows, or private property, and do not linger.
Read the primary research source ↗
ACCESSIBILITY
Details need a check
Unknown, and not assessed as a visitor destination because public access is unavailable or the site is sensitive.
ACCESS & SAFETY
Specific, not sensational
No trespass, doorstep visits, address hunting, or attempts to refine the approximate marker. Learn from the public story instead.
TRUST & SOURCES
usable
Every visible claim is connected to a source and review date. Unknown never silently means no.
Caltech biology history ↗
Checked Aug 22, 2026
PCAD — Arturo Bandini House lifecycle ↗
Checked Aug 22, 2026
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