believed
...that before the 17th century, it was believed that all organisms grew from miniature versions of themselves that had existed since the beginning of creation?
...that before the 17th century, it was <b id="mwAvQ"><a href="./Preformationism" id="mwAvU" rel="mw:WikiLink" title="Preformationism">believed</a></b> that all organisms grew from miniature versions of themselves that had existed since the beginning of <a class="mw-disambig" href="./Creation" id="mwAvY" rel="mw:WikiLink" title="Creation">creation</a>?