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What do all vertebrate organisms have in common when they are embryos?
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∙ 8y ago
pouches
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How are vertebrate embryos evidence of evolution?
All vertebrate embryos look roughly the same, showing that they come from a common ancestor.
Why does comparative embryology show similarities between organisms that do not appear to be similar as adults?
Comparative embryology is the study of the similarities and differences in the embryos of different species. Similarities in embryos are evidence of common ancestry. All vertebrate embryos, for example, have gill slits and tails. All of the animals except for fish, lose their gills slits by adulthood. Some of them also lose their tail. In humans, the tail is reduced to the tail bone. Thus, similarities organisms share as embryos may be gone by adulthood. This is why it is valuable to compare organisms in the embryonic stage
Do all organisms start out as embryos?
No, not all organisms start out as embryos. Embryos are typically seen in higher animals that undergo sexual reproduction, where a fertilized egg develops into an organism. Organisms like bacteria and protists reproduce asexually and do not have an embryonic stage in their life cycle.
What is found in all chordates and provides support in embryos and in some adult organisms?
Notochord
What do these vertebrate groups have in common?
all vertebrate have a spinal cord.
All vertebrate embryos develop gills during one of the many growth phases in their development?
It would be more appropriate to say that all vertebrate embryos develop pharyngeal gill slits during one of the many phases in their embryonic development. This is because while gills are specifically present in fishes, pharyngeal gill slits are a general chordate feature.
Is a Common toad a vertebrate or an invertebrate?
Toads have a spinal cord and backbone, which means they are vertebrates.
What do rainforest have in common and what don't they have not common about them?
they all have organisms
Darwin and theory of common descent states that all organisms?
Darwin's theory of common descent states that all organisms _____.
Darwin’s theory of common descent states that all organisms?
Darwin's theory of common descent states that all organisms evolved from past organisms.
What do all photosynthetic organisms have in common?
All photosynthetic organisms create energy from sunlight.
What do all organisms do in common?
All organisms use DNA and rna to pass on information.
