Which animal adaptation happened before the others?
A) Reproduction on land
B) Development of a colelom
C) Tissue development
D) Deuterostome development
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Tissue development - animal adaptation happened before the others
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The answer is tissue development.
According to studies, evoluation of animals often depend on the sequence of transcription, based on the idea that evolution and adaptation is depends on the changes being made in gene expression.
As per the requirements, tissue development gives rise to a new needed organ and placenta formed from the tissues of both the embryo and the mother.
The uterine wall, yolk sac and blood vessels of the mother give rise to the required adaptation, and it continues developing over generations.
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