| Term | Definition |
|
determination |
process by which a cell commits to a particular course of development |
|
genetic-equivalence hypothesis |
all cells contain same genes, but some genes become inactive during differentiation |
|
selective-gene-loss hypothesis |
differentiating cells lose some genes |
|
monoploid |
1 set of chromosomes |
|
haploid |
1/2 as many chromosomes |
|
diploid |
2 sets of chromosomes |
|
epicotyl |
all the plant parts above the seed |
|
hypocotyl |
dicots; portion of stem below seed leaf |
|
radicle |
embryonic root |
|
monocot |
1 cotyledon; leaves part in 3s; parallel veins |
|
pericycle |
tissue gives rise to roots |
|
ray cells |
cells that get water from center to other parts of tree |
|
dicot |
2 cotyledons; leaves part in 4s and 5s; netted veins |