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- Click ‘Get Form’ to open the comparative embryology form in the editor.
- Begin by entering your name, period, and date at the top of the form. This information is essential for identifying your submission.
- Navigate to Site #1: The Zoo In You. Click the ‘Launch Interactive’ button to access the resources needed for answering questions about developmental similarities.
- Answer question 1 by describing what the human embryo shares with the shark embryo in the provided space.
- For question 2, write down the term used for genes shared by many species that organize body plans.
- In question 3, explain what happened to the notochord you shared with Amphioxus during your embryonic development.
- Proceed to Site #2: Guess the Embryo and click ‘Launch Interactive’ to identify early developmental stages of various species.
- Complete question 4 by stating what all animals begin as during their earliest development stage.
- Identify each of the four embryos shown in question 5 and write down their species names in the designated spaces.
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What is the comparative study of embryology?
Comparative embryology is defined as the study of fertilization processes and the developmental patterns of embryos and endosperms across a diversity of plants, particularly focusing on variations in plant life cycles.
How does comparative anatomy provide evidence for common ancestry?
Anatomical similarities, such as those that characterize tetrapod limbs, are used as evidence for common ancestry. In other words, these similarities suggest that pterodactyls, bats, hawks, whales, and humans all share a common ancestor somewhere in their distant past.
How does comparative embryology show evidence for common ancestry?
Comparative embryology is the study of the similarities and differences in the embryos of different species. Similarities in embryos are likely to be evidence of common ancestry. All vertebrate embryos, for example, have gill slits and tails.
What is an example of a comparative embryology?
Comparative embryology reveals homologies that form during development but may later disappear. All vertebrate embryos develop tails, though adult humans retain only the coccyx. All vertebrate embryos show gill slits, though these develop into gill openings only in fish and larval amphibians.
How can these embryos be used as evidence for a common ancestor?
The field of comparative embryology aims to understand how embryos develop, and to research the inter-relatedness of animals. It has bolstered evolutionary theory by demonstrating that all vertebrates develop similarly and have a putative common ancestor.
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Who is the father of comparative embryology?
Karl Ernst von Baer: The Father of Embryology | Lowell Milken Center.