embryonic development

What Happens During The Fetal Stage Of Development?

by

What Happens During The Fetal Stage Of Development? Stages of development: During the fetal stage, the brain develops and the body adds size and weight, until the fetus reaches full-term development. Throughout the fetal stage the brain continues to grow and develop, nearly doubling in size from weeks 16 to 28. What physical changes occur

Do Flatworms Have Embryonic Development?

by

Do Flatworms Have Embryonic Development? Do flatworms have embryonic development? Since long, the embryonic development of flatworms has attracted attention of embryologists and phylogeneticists alike for their assumed central position in the evolution of the Bilateria or even the Metazoa [3]. How do flatworms develop? The life cycles of the free-living forms are relatively simple.