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During development, embryos of multiple groups of animals exhibit similar characteristics, but may change as they grow. This supports the idea that all of today's organisms share a common ancestor.
'An example is bird limbs. Birds are tetrapods, all of which have five-digit limbs, but adult birds have a three-digit limb in its wings. This might appear to be a problem until you examine birds' embryos, and then you will find that this limb develops from a five-digit precursor. Another example is teeth in some toothless whales. Some toothless whales develop teeth as embryos that are absorbed later in embryonic development.
Why should a toothless whale develop teeth that are later absorbed? Why should organisms which are so different as adults have so many similarities as embryos? Why should a bird's three-digit limb develop from a five-digit limb? If life forms developed independently, one would think that their embryonic development would be distinct and reflect what the organism will look like when it is fully developed.'
From "Embryonic Homologies - How Embryonic Homologies Support Evolution"
http://Atheism.about.com/od/evolutionexplained/a/EmbryonicHomologies.htm
What else can I help you with?
What can embryos tell us about evolution?
Actually yes it can. Embryos, DNA sequences, and fossils amongst others things can help show similarities within species. This can show that those species have similar traits because they evolved from a common ancestor. But those differences show why they are different species and thus evolving.
How do the embryos of different species support the theory of evolution?
The morphology of embryos at various stages, and even the developmental patterns of embryos, show the same pattern of nested hierarchies that we find in morphology, behaviour and genomes, independently confirming common descent, but also teaching us how morphologies could diverge through relatively minor genetic shuffling.
What are embryo similarities?
Embryos of different species often show similarities in their early developmental stages, such as the presence of a notochord, pharyngeal pouches, and a post-anal tail. These shared characteristics are considered evidence of common ancestry and evolution. Additionally, embryos of various organisms often undergo similar developmental processes, such as gastrulation and neurulation.
How do embryos provide evidence for evolution?
Embryos provide evidence for evolution by showing similarities in early development among different species, suggesting a common ancestry. This supports the idea that all living organisms have evolved from a shared ancestor over time.
How do similarities in developing embryos provide evidence of evolution?
Similarities in developing embryos provide evidence of evolution because they suggest a common ancestry among different species. These similarities in the early stages of development can indicate shared genetic and evolutionary relationships, supporting the idea of evolution through common descent.
What can embryos tell us about evolution?
Actually yes it can. Embryos, DNA sequences, and fossils amongst others things can help show similarities within species. This can show that those species have similar traits because they evolved from a common ancestor. But those differences show why they are different species and thus evolving.
How do the embryos of different species support the theory of evolution?
The morphology of embryos at various stages, and even the developmental patterns of embryos, show the same pattern of nested hierarchies that we find in morphology, behaviour and genomes, independently confirming common descent, but also teaching us how morphologies could diverge through relatively minor genetic shuffling.
What are embryo similarities?
Embryos of different species often show similarities in their early developmental stages, such as the presence of a notochord, pharyngeal pouches, and a post-anal tail. These shared characteristics are considered evidence of common ancestry and evolution. Additionally, embryos of various organisms often undergo similar developmental processes, such as gastrulation and neurulation.
How do embryos demonstrate evolution?
Basically, its the shape of the embryos of vertebrates. If the shape of the embryos are similar, that means they evolved from a common ancestor.More specifically, it's the pattern of nested hierarchies that is found when one compares the embryological developmentof species. Also, developmental atavisms, such as the branchial arches in human embryos, are important clues telling us about our ancestry.
How do embryos provide evidence for evolution?
Embryos provide evidence for evolution by showing similarities in early development among different species, suggesting a common ancestry. This supports the idea that all living organisms have evolved from a shared ancestor over time.
How do similarities in developing embryos provide evidence of evolution?
Similarities in developing embryos provide evidence of evolution because they suggest a common ancestry among different species. These similarities in the early stages of development can indicate shared genetic and evolutionary relationships, supporting the idea of evolution through common descent.
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
How are embryos used as evidence of evolution?
Embryos provide evidence for evolution through comparative embryology, showing similarities in development among different species. This suggests a common ancestry and the existence of shared genetic information inherited from a common ancestor. By studying how embryos of different species develop, scientists can trace evolutionary relationships and infer evolutionary history.
How can embroyotic development be used as evidence for evolution?
Embryonic development can show similarities among different species, which suggest a shared ancestry and evolution from a common ancestor. The presence of vestigial structures in embryos, such as gill slits in human embryos, can also provide evidence of evolutionary history. Additionally, comparisons of the timing and sequence of embryonic development in different species can provide insights into their evolutionary relationships.
How could a study of these embryos help show the relationships among animals with backbones?
Studying embryos of animals with backbones can help elucidate evolutionary relationships by identifying similarities and differences in developmental processes. By comparing developmental stages and gene expression patterns, researchers can infer common ancestry and evolutionary relationships among different species. This information can provide insights into the evolutionary history of vertebrates and help reconstruct their phylogenetic relationships.
What does similar structures in embryos mean?
Similar structures in embryos refer to the presence of common anatomical features and developmental patterns observed in the early stages of different organisms. This similarity is often used as evidence to support the theory of common ancestry, suggesting that these organisms share a common evolutionary history. Studying these similarities can provide insights into the relationships between different species and the processes of evolution.
Why would scientsists study embyos what features of thesee 3 embryos supprt evolution?
Scientists study embryos because they provide insights into how organisms develop and evolve. The features of embryos that support evolution include shared structures across different species, such as gill slits and tails in vertebrates, which suggest common ancestry. Comparing embryos of different species can also reveal similarities in developmental pathways, further supporting evolutionary relationships.
