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Bio 316 Exam 1 Study Guide Questions And Answers With Latest Solutions
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Amphibians - DISPLACED radial cleavage Annelids, molluscs, flatworms - SPIRAl cleavage Anterior (Rostral) - front Body Axes - Anterior, posterior, dorsal, ventral, lateral, medial Body planes - sagittal, horizontal, transverse Cellular Life Cycle - ONE gamete -> join ONE zygote -> MANY c...

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  • August 4, 2024
  • 6
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • bio 316

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  • Bio 316
  • Bio 316

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PatrickKaylian

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Bio 316 Exam 1 Study Guide
Amphibians - DISPLACED radial cleavage



Annelids, molluscs, flatworms - SPIRAl cleavage



Anterior (Rostral) - front



Body Axes - Anterior, posterior, dorsal, ventral, lateral, medial



Body planes - sagittal, horizontal, transverse



Cellular Life Cycle - ONE gamete -> join ONE zygote -> MANY cell embryos -> VERY many cell types



Centrolecithal cleavage - yolk in the CENTER of egg



Cephalopod mollusks - Meroblastic bilateral cleavage



Cleavage - cell division withOUT growth



Commitment - involves specification and determination



Determination - autonomous differentiation when placed in a REGION (reversible)



Differentiation - multi step specialization process preceded by commitment



Dorsal - back

, Echinoderms and Amphioxus organisms - RADIAL cleavage



EE types - External, Internal, E.R.P (environmental regulation pathway)



Embryonic Environment (EE) - conditions experienced that influence survival



Environmental Rregulation Pathway - external stimulator triggers signaling event in embryo that
stimulates embryonic pathway and changes developmental pathway



Epigenesis - theory of individual's final form is through a series of progressive changes



External environment - light, temp, humidity, predators



Fate Map - determine where and what type of cells will be



Fertilization - fusion of sperm and oocyte (egg)



First body system to develop in verterbrate embryo is - nervous system



Fish, reptiles, birds - DISCOIDAL cleavage



Fluorescent Dye Stain - long lasting and localized; needs special microscope that weakens dye
each time used due to light exposure



Gastrulation - 3 germ layers form (differentiation)



Genetic Markers - transgenesis (using some factor present in a cell to another cell and seing if it'll
grow)

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