every day
oooooh! man its been a while since school excited me- i haven't learned as much interesting stuffff this semester.
and its really hard to get excited about an 8am science class.
but today i learned something funky!
there is no such thing as blue eyes... genetically speaking.
check it out:
if a person is homozygous for a certain recessive gene, then there is no observable amount of pigment in the front part of the eyes, and the eye appears blue. this is not because of blue pigment, but because of the same optical effect that causes the sky to appear blue on a clear day. colorless cells in the more superficial layers of the iris viewed against the dark background of the deeper layers scatter the light so that blue light is reflected back to the eye of the observer. a dominant gene causes pigment to be deposited in the front layer of the iris producing brown, hazel, green, or other eye colors.
so i have colorless eyes!
the differences in shades of blue between people is accounted for by the different shapes of one's eyeball.
blue eye color resulting from refracted light through colorless cells might also account for why blue eyes appear to change color occassionally.
neato!
-e.
and its really hard to get excited about an 8am science class.
but today i learned something funky!
there is no such thing as blue eyes... genetically speaking.
check it out:
if a person is homozygous for a certain recessive gene, then there is no observable amount of pigment in the front part of the eyes, and the eye appears blue. this is not because of blue pigment, but because of the same optical effect that causes the sky to appear blue on a clear day. colorless cells in the more superficial layers of the iris viewed against the dark background of the deeper layers scatter the light so that blue light is reflected back to the eye of the observer. a dominant gene causes pigment to be deposited in the front layer of the iris producing brown, hazel, green, or other eye colors.
so i have colorless eyes!
the differences in shades of blue between people is accounted for by the different shapes of one's eyeball.
blue eye color resulting from refracted light through colorless cells might also account for why blue eyes appear to change color occassionally.
neato!
-e.