multicellularity Flashcards
ant workers
- get genes directly from queen
- do not evolve!
- do not reproduce
- programmed by queen / an extension of the queen / an organ of the queen but not attached
super organism
many individuals operating as one
SOMA cells
somatic cells
- almost all cells of the body
- destined to die
- an evolutionary dead end
single celled organisms dont have a SOMA
SOMA serves the germline
germline
sex cells and their precursors
- the unbroken connection between past and future generations
why do workers act in the queen’s interest
because she is the one who gives their genes
why do individual cells act in the interest of the whole organism
because the germline gives the somatic cells their gene
journey of an egg
- egg leaves ovary and enters fallopian tube
- sperm enters egg and unites with nucleus (fertilisation)
- fertilised egg divides
- cells attach to uterus
emergence
when something is more than the sum of its parts
ie. synergy
1+ 1> 2
1+1=2 is not emergence
ie. a house is more than its parts
ie. individual ants do not float at all but ant colonies float
ie. a sentence is more than the sum of words
ie. a multicellular organism is more than many cells
when possibilities seem exhausted –> use emergence and get more possibilities