Chapter 16

maternal substances in egg that influence early development

• morphogensis

• cytoplasmic determinants

• induction

• determinaiont

embryonic cells signal molecules cause transcriptional changes in nearby target cells (part of differentiation)

• morphogenesis

• cytoplasmic determinants

• induction

• determination

Tags

NGSS.HS-LS1-4

physical processes that give organism its shape

• morphogenesis

• cytoplasmic determinants

• induction

• determination

Tags

NGSS.HS-LS1-4

determination

• assignment of a cell's job

• occurs after differentiation

• cell placed in location in embryo

• occurs before differentiation

Tags

NGSS.HS-LS1-4

substance distributed unevenly in unfertilized egg

• nucleus

• mitochondria

• golgi apparatus

• cytoplasm

resulting mitosis cells contain different (?) (leads to different gene expression)

• homeotic genes

• maternal effect genes

• cytoplasmic determinants

• morphogens

Tags

NGSS.HS-LS1-4

transcription factor that targets genes encoding muscle-specific proteins

• myoD

• apoptosis

• pattern formation

• positional information

Tags

NGSS.HS-LS1-4

development of organization of tissues and organs (begins with establishment of major axes)

• myoD

• apoptosis

• pattern formation

• positional formation

Tags

NGSS.HS-LS1-2

NGSS.HS-LS1-4

molecular cues that control pattern formation (relative to body axes and neighboring cells)

• myoD

• apoptosis

• pattern formation

• positional information

apoptosis

• programmed cell death

• DNA broken up and cytoplasmic components fragmented

• contents in vesicles called "blebs"

• protects neighboring cells from damage