ANIMAL DEVELOPMENT

ANIMAL DEVELOPMENTWHAT IS THE TERM FOR THE FUSION OF

GAMETES? FERTILIZATION

IS AN EGG CELL STILL JUST AN EGG CELL WHEN A SPERM HAS FERTILIZED IT? FERTILIZED EGG = EMBRYO

ANIMAL DEVELOPMENTHOW DOES THAT SINGLE CELLED EMBRYO,

TURN INTO A MULTI-CELLULAR ANIMAL?

YOU NEED TO GO FROM ONE CELL TO MANY CELLS, WHICH MEANS YOU NEED CELL DIVISION…

ANIMAL DEVELOPMENTCLEAVAGE

A FORM OF MITOTIC CELL DIVISION RAPID MITOSIS, WHICH DOESN’T GIVE THE CELL

TIME TO REGROW ADVANCED TERMS

MORULATIONBLASTULATIONGASTRULATION

ANIMAL DEVELOPMENT IF CLEAVAGE USES MITOSIS, AND

MITOSIS MAKES “IDENTICAL” OFFSPRING, HOW CAN MULTI-CELLULAR ORGANISMS HAVE CELLS THAT ARE SO DIFFERENT? (I.E. NERVE CELLS, STOMACH CELLS, SKIN CELLS, ETC.)

DIFFERENTIATION THE PROCESS BY WHICH CELLS

BECOME SPECIALIZED

ANIMAL DEVELOPMENTDIFFERENTIATION

EVEN THOUGH EVERY CELLIS GENETICALLY IDENTICAL, NOT EVERY CELL USES THE SAME DNA…

DIFFERENT CELLS, USEDIFFERENT PARTS OF THE DNA

ANIMAL DEVELOPMENTTHE PROCESS OF GOING FROM A SINGLE

FERTILIZED EGG TO A MULTI-CELLULAR ORGANISM IS REFERRED TO AS DEVELOPMENT

DEVELOPMENT CAN OCCUR EXTERNALLY OR INTERNALLY

ANIMAL DEVELOPMENTLET’S FOCUS ON HUMANS!!

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