★
Cell differentiation depends on the control of gene expression, producing specific proteins
Cell differentiation depends on the control of gene expression, producing specific proteins
Forums The Undercurrent it's literally just biology
★
Activation or inactivation of developmental genes results from cell-cell communication (signals from neighbors)
Activation or inactivation of developmental genes results from cell-cell communication (signals from neighbors)
★
In animals, developmental stages affect the whole organism, but transitions in plant developmental stages (phases) occur only in shoot apical meristem
In animals, developmental stages affect the whole organism, but transitions in plant developmental stages (phases) occur only in shoot apical meristem
★
Juvenile nodes/internodes retain juvenile status even after the shoot apical meristem has changed to adult phase, vice versa
Juvenile nodes/internodes retain juvenile status even after the shoot apical meristem has changed to adult phase, vice versa
★
New leaves that develop on juvenile axillary buds will also be juvenile, regardless of the phase of the shoot apical meristem
New leaves that develop on juvenile axillary buds will also be juvenile, regardless of the phase of the shoot apical meristem
★
Flower formation = phase change from vegetative growth (indeterminate) to reproductive growth (determinate)
Flower formation = phase change from vegetative growth (indeterminate) to reproductive growth (determinate)
★
Production of a flower by a shoot apical meristem stops the growth of that shoot
Production of a flower by a shoot apical meristem stops the growth of that shoot
★
Meristem identity genes encode transcription factors that regulate the genes involved in conversion from indeterminate vegetative meristem to determinate floral meristem
Meristem identity genes encode transcription factors that regulate the genes involved in conversion from indeterminate vegetative meristem to determinate floral meristem
★
Organ identity genes encode transcription factors that regulate the development of floral organs
Organ identity genes encode transcription factors that regulate the development of floral organs
★
The order of each primordium’s emergence (and thus its location) determines the expression of specific organ identity genes → development into a particular floral organ
The order of each primordium’s emergence (and thus its location) determines the expression of specific organ identity genes → development into a particular floral organ
★
ABC hypothesis - 3 classes of genes direct the formation of the 4 types of floral organs
ABC hypothesis - 3 classes of genes direct the formation of the 4 types of floral organs
★
Each class of organ identity genes is switched on in 2 specific whorls of the floral meristem
Each class of organ identity genes is switched on in 2 specific whorls of the floral meristem
★
A inhibits C and vice versa. If A or C is missing, the other takes its place
A inhibits C and vice versa. If A or C is missing, the other takes its place
★
Algal ancestors of land plants absorbed water/nutrients/CO2 from the water in which they lived
Algal ancestors of land plants absorbed water/nutrients/CO2 from the water in which they lived
★
Early nonvascular land plants had leafless photosynthetic shoots and were anchored by rhizoids
Early nonvascular land plants had leafless photosynthetic shoots and were anchored by rhizoids
★
Tall plants w/ broad leaves for absorbing light and stomata for diffusion of CO2 → greater loss of water → need multicellular, branching roots for water absorption
Tall plants w/ broad leaves for absorbing light and stomata for diffusion of CO2 → greater loss of water → need multicellular, branching roots for water absorption
★
Tall shoots required efficient long-distance transport of water/minerals/photosynthates → xylem + phloem
Tall shoots required efficient long-distance transport of water/minerals/photosynthates → xylem + phloem
You must be logged in to post
Login now to reply
Don't have an account? Sign up for free!
Having you as a Voltie would be awesome.