The chicken, the fish, and the human. :)
Related species have similar embryos.
The study of similar structures that appear during the development of different organisms is known as evolutionary developmental biology, or "evo-devo" for short. This field seeks to understand how genetic changes can lead to the evolution of new structures and functions during development.
Compare embryonic growth and fetal development in single and multiple pregnancies, including the incidence of complications and infant mortality.
Related species have similar embryos.
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Embryology, along with similar structures like homologous organs and vestigial organs, provides clues about the evolutionary relationships between organisms. By studying the similarities and differences in embryonic development and structures across different species, scientists can infer how they are related and classify them into different groups based on their evolutionary history.
Organisms at the embryological level commonly have similar structures called homologous structures, which share a common evolutionary origin. These structures may develop into different organs or parts in adults but have a common ancestral structure during embryonic development. Examples include the pharyngeal pouches in vertebrates and limb buds in tetrapods.
During embryonic development, all vertebrates go through similar stages such as gastrulation where three germ layers are formed, and neurulation where the nervous system begins to develop. Additionally, all vertebrates exhibit similar embryonic structures such as the notochord and pharyngeal arches. The similarities in embryology across different species provide evidence for common ancestry and evolutionary relationships.
Organisms that are closely related evolutionarily tend to have embryonic stages that are more similar. For example, mammals such as humans and mice have similar embryonic stages due to their close evolutionary relationship. Conversely, organisms that are more distantly related, like mammals and insects, have more differences in their embryonic development.
if you can work out what the 'following animals' are, you'll be a lot closer to the answer!
The developing mammalian fetus shares similar structures with the amniotic egg due to their common evolutionary ancestry and the need for a protective environment for embryonic development. Both systems utilize membranes—such as the amnion and chorion in mammals and the various membranes in an amniotic egg—to provide cushioning, moisture regulation, and waste management. These adaptations help ensure the survival and proper development of the embryo in terrestrial environments, reflecting evolutionary solutions to similar reproductive challenges.
It is either homologous structures or homozygous structures. Embryological structures are when different species of animals look similar in the earliest stage of development and Analogous structures are when animals look different but their function is basically the same. So just look up homologous structures and homozygous structures in your Bio book!!