Biology

Biology, 09.08.2019 17:10, JvGaming2001

The embryonic development in nematodes can have up to larval stages.
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Biology, 27.06.2019 07:40, shavonfriend27

The chart below shows three different stages of embryonic development for three different animal species. stages of development of three animal species the earliest stage in the chart appears very similar for all three species. for example, all three embryos at this stage have gill slits and a large embryonic tail. what do these similarities most likely indicate? a. all three species look very similar as adults. b. all three species evolved from a single mammalian ancestor. c. all three species share a distant common ancestor. d. all three species evolved in the past 100 years.

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Biology, 24.07.2019 02:30, mariaveliz2201

The diagram shows embryo development of four different animals. how is this evidence used to suggest that life changes over time? a.lack of homologous structures in later stages of embryonic development indicate that each species is unique, and a common ancestor is unlikely. b.similarities in embryonic development prove that vestigial structures are common to all species, and life has changed very little over time. c.when there are physical similarities in the early stages of embryonic development, it suggests that each of the modern organisms once had a common ancestor. d.the genetic inheritance of each of these species is exactly the same in the early stages of development but then changes as the embryo grows and develops over time.

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Biology, 25.07.2019 05:00, ineedhelp2285

Which of the following best describes why scientists often study embryonic structures when determining evolutionary relationships? a. organisms from different kingdoms always have similar embryonic structures. b. examining embryonic stages allows scientists to better understand the behaviors of organisms. c. there are sometimes similarities in the embryonic stages of organisms that do not exist in the adult stages. d. adult organisms from different species never possess similar anatomical structures.

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