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What's the difference between an embryo, a zygote and a fetus?

zaq zaq

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Posts: 9

Rep:

12 years ago

What's the difference between an embryo, a zygote and a fetus?

What's the difference between an embryo, a zygote and a fetus?

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juliabreslin

wrote...

#1

12 years ago

They are similar. A zygote forms after fertilization. A zygote becomes an embryo which becomes a fetus.

An embryo is a multicellular diploid eukaryote in its earliest stage of development.

In organisms that reproduce sexually, once a sperm fertilizes an egg cell, the result is a cell called the zygote that has all the DNA of two parents.

A fetus (or foetus, or f?tus) is a developing mammal or other viviparous vertebrate, after the embryonic stage and before birth.

smile

wrote...

#2

12 years ago

Nothing more than time.

Zygote -> Embryo -> Fetus -> Baby

Each stage gets more complex and larger than the one before until you have yourself a functioning baby animal / person.

02bchallenged

wrote...

#3

12 years ago

Egg>Zygote>Embryo>Fetus>Newborn

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