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Are all organisms embryo's the same in the first stage of development?
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What does embryology tell you about evolution?
Ontogeny recapitulates phylogeny, or the development of the individual summarizes the evolution of the species. For example, human embryos go through a stage in which they develop gills as did their aquatic forerunners.
How do embryos support the Theory of Evolution?
By monitoring how and what an embryo grows as it matures, you can see a lot of things that you cannot see in a fully grown animal. For instance, human embryos have a tail at certain stages in development. They also surprisingly have gills at one stage. Two of these pairs of gill slits disapear as the embryo grows, and the final pair move upwards to become your eustacian canals and ears. This shows us that humans once had tails and that hundreds of millions of years ago we also had gills, which means that at some point in our past we were once sea dwelling.Embryology shows that organisms look the same at their earlier stages. This supports evolution. Evolution is the idea that many organisms have a common ancestor, and that is why they have similar traits.The stages of development of the embryos of different organisms are extremely similar, thereby suggesting common ancestors.
Human embryos develop for about how long?
Human embryos typically develop for approximately 8 weeks before they are considered to have reached the fetal stage of development.
What explains embryonic pattern formation in a wide variety of organisms?
The embryonic stage is a typical stage in development for animals that reproduce sexually, and it has stood the test of evolution in several species.
What is the first female human stage of life?
The first stage is conception, in which is the making and having of the female or male child.
What is the stage of the plant embryos in which the embryos are alive but not growing?
dormancy
What are the characteristics of the pharyngula stage in development?
At the pharyngula stage of development, all vertebrate embryos show similarities. These include the notochord, the dorsal hollow nerve cord, the post anal tail and a series of branchial grooves.
What is a newborn chicken?
Chickens are not born they are hatched. Unhatched chickens are called Embryos. Embryos are fertilized egg at any stage of development prior to hatching
What is the prenatal development begins at this point called?
First Stage: The first two weeks after conception are known as the Germinal stage. Second Stage: The next six weeks of development are known as the Embryonic stage. Third Stage: The remainder of prenatal development is known as the Fetal stage.
What is the first stage in a thunderstorm?
The cumulus/development stage
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
The first stage of a thunderstorm's development is the cumulas stage?
The Cumulus Stage
What is the first stage of a thunderstorms development?
The Cumulus stage
Organism at an early stage of its development?
egg , baby, youth, adult, death?Are you sure that's right?
What are the correct order of the first stage development to the last stage?
Fetus
First stage in the development of coal?
peat
What is the first stage of development after fertilization?
Zygote
