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Why do vestigial structures persist in modern organism?

The environment will not select for or against organisms that have a particular structure unless that structure affects the organisms' fitness.They are called Vestigial because they persist to exist.Additionally, evolution takes time, especially when something is not pushing it forward.


The remnant of an organ that had a function in an early ancestor is known as?

Vestigal organ


Which is considered a vestigial structure in humans a.tail b.nose c.arm d.ear?

tail. vestigial structures no longer have a purpose in modern life.


What Scientific reasoning of how a vestigial organ is evidence of evolution?

Vestigial organs are remnants of structures that were functional in our ancestors but no longer serve a purpose in modern organisms. The presence of these non-functional structures suggests that they have evolved from ancestral forms where they had a function. This supports the theory of evolution by providing evidence of how species have changed over time through natural selection and adaptation to new environments.


The pelvic bones of modern whales no longer function like the pelvis of a land animal and are an example of?

vestigial structures.


What causes the difference between the ancestor and modern koalas?

a. the presence of homologous structures b. the presence of vestigial organs


What do you call organs you don't use?

vestigial organs like the appendix which is vestigial in man


What are features a modern organism doesn't need but has inherited from it's ancestors called?

Vestigial structures. Sometimes put to other uses that they were not adapted for.


Homologous structure that is greatly reduced in size is called?

A homologous structure that is greatly reduced in size is known as a vestigial structure. These structures are remnants of organs or body parts that had a function in ancestors but are no longer used in modern organisms. Examples include the human appendix and the hip bones in whales.


Body structures that don't seem to have a function?

One example of a body structure that doesn't seem to have a function is the human appendix. This small, pouch-like organ located near the junction of the small and large intestines has historically been considered a vestigial structure with no clear purpose in modern humans. Other examples include remnants of the tailbone in humans and wisdom teeth, which are often considered vestigial structures that served a purpose in our ancestors but are less functional in present-day humans.


Name 21 vestigial organs in humans?

The appendix, tonsils, wisdom teeth, tailbone (coccyx), plica semilunaris, and arrector pili muscles are commonly cited as vestigial organs in humans. These organs are remnants of structures that were functional in our evolutionary ancestors but have reduced or lost their original function in modern humans.


True or False If two modern organisms are distantly related in an evolutionary sense then one should expect that they should share fewer homologous structures than two more closely related organisms?

True. The more distantly related two organisms are in evolutionary terms, the fewer homologous structures they are likely to share. Homologous structures are features that have a common evolutionary origin, so closely related organisms are expected to have more similarities in their structures compared to more distantly related organisms.