fertilization of sanddollar eggs
1:07
Added: 4 years ago
From: GirlScientist
Views: 16,610
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  • This is cool!

    princesskimbie 11 months ago

  • Hmm I thought that the membrane was there to protect the newt formed embryo whilst it is in development. What I mean is, isnt the membrane there to stop anything iterferring with it's Asexual reproduction? Is it it just me needing to revise more haha

    GTadamisthe1 1 year ago

  • @GTadamisthe1

    It does both. Protects against polyspermy and later protects the developing zygote.

    GirlScientist 1 year ago

  • wow

    TheRaveyBabyy 1 year ago

  • awesome

    Munge74 2 years ago

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