20. Development
Animal Development
Multiple Choice
Multiple ChoiceDuring cleavage the single large zygote is converted into a __________.
A
three-layered embryo called a gastrula
B
multicellular embryo with a blastopore and an archenteron
C
multicellular embryo consisting of a zona pellucida and a zygote
D
fetus
E
multicellular embryo consisting of smaller cells called blastomeres
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