Evolution of biological clock.

A chiming biological clock?

What is it famous for? Without doubt, the Tanaguchi Foundation’s major achievement was the funding of a cyclotron at Osaka University between 1937 and 1943. The construction of that facility was a major boost to Osaka University and enabled it to attract many young scientists to its new Physics department. One of the Department’s first Professors was Hideki Yukawa, the theoretical physicist who...

Medical implications of the male biological clock.

The tick-tock of the biological clock.

enous at 3 P.M. but have no appetite when suppertime rolls around. You wake up at 4:00 in the morning and cannot get back to sleep. This scenario is familiar to many people who have flown from the East Coast of the U.S. to California, a trip that entails jumping a three-hour time difference. During a weeklong business trip or vacation, your body no sooner acclimatizes to the new schedule than i...

Analysis of the Biological Clock Decision

T decisions of if and when to have a first child are very important for any woman or couple. This paper develops a model to examine when a woman should begin trying to conceive, which depends on the personal circumstances and values of each woman. The model incorporates separate objectives for a woman’s professional, social, and family aspects of life and integrates them into a quality-of-life ...

Maternal Feeding Controls Fetal Biological Clock

BACKGROUND It is widely accepted that circadian physiological rhythms of the fetus are affected by oscillators in the maternal brain that are coupled to the environmental light-dark (LD) cycle. METHODOLOGY/PRINCIPAL FINDINGS To study the link between fetal and maternal biological clocks, we investigated the effects of cycles of maternal food availability on the rhythms of Per1 gene expression...