Nettie Stevens Discovered the XY Sex-determination System Fact
Nettie Stevens and Edmund Beecher Wilson independently discovered the chromosomal XY sex-determination system (that males have XY and females have XX sex chromosomes).
Cell Biology (Cytology)
Cell biology (cytology) is a branch of biology concerned with the study of the cell including it’s physical properties and how it relates to it’s environment.
All Mammals Start as Female Myth
Mammals don’t start as females, they start as a blank slate with XX/XY genetic code, and for the first 5-6 weeks of gestation only the X gene expresses.
Some People are Born Gay Fact
Science suggests people are born in a range of places in the gay and transgender spectrum, with both nature and nurture playing a role in sexuality.
Some Cells Can Live Forever Fact
Some cells appear to be able to live forever in a lab. However the Hayflick limit sets a cap on the number of times a cell can divide.
Mirror Neurons Fire When Observing and Preforming an Action Fact
Mirror neurons are neurons that “fire” when observing an action and when performing an action, this allows for learning through imitation (“mirroring”).
432 Hz is Better than 440 Hz Myth
It’s theorized that using a starting pitch of A=432 Hz and a “just intonation” tuning method (scientific tuning) is more natural and mathematically symmetric than using A=440 Hz and “equal temperament” tuning (concert tuning).
There are Different Blood Types Fact
There are four general blood types (A, B, AB, and O), each can be Rh ‘+’ or ‘-‘. Blood types differ by antigens on the surface of red blood cells.
Mushrooms are the Fruiting Bodies of Fungi Fact
All mushrooms are fungi, but not all fungi are mushrooms. Mushrooms are the fruiting body of fungi that typically grow above ground.
Humans are Hardwired to be Social Beings Fact
Humans are hardwired to be social beings. We naturally cooperate, care, and compete. From quarks, to cells, to plants, to animals, cooperation is in our DNA.
Light Can Affect Mood Fact
Exposure to light in moderation, especially natural sunlight, can have an uplifting effect on mood, while excessive darkness can have the opposite effect.