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Yes, because vestigial structures can be harmful. For example, some humans are now born without an appendix which ensures they will not be killed via appendicitis.
Having a smaller expression of a vestigial structure, like having a smaller appendix, saves on the energy wasted in maintaining an unneeded structure.
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoyes. if they are not needed the animals either lose them, change them, or die out.
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why are structures not removed by natural selection?
Vestigial structures do not harm the organism. Nature selects against only harmful traits.
Within which structures in humans are bacteria and dead cells removed from lymph?
Lymph Nodes
A small number of finches are removed randomly from the wild and placed in a protected bird area. they need and have plenty of space. why would natural selection not occur in this population?
The population has not reached carrying compacity is correct on apex
How would the carbon cycle and the nitrogen cycle be affected if decomposer were removed from earth's biosphere?
because u can kiss my natural black but
What brain area can be removed and humans still live?
back in the early 1900's they did lobotomys and that is where they removed part of the front part of your brain, they did this for disturbed people because the front of the brain is what controls personality and reasoning, they removed that part, the rest needs to be left alone for natural body functions
why are structures not removed by natural selection?
Vestigial structures do not harm the organism. Nature selects against only harmful traits.
Why are vestigial structures not removed by natural selection?
Nature selects against only harmful traits
Why do molluscs have a soft body?
When they first appeared, they all had a hard shell to protect them, as they evolved and natural selection removed some of their relatives, this trait was removed and (like octopodes and squid) the shell became a vestigial structure and was removed.
Why wisdom teeth are vestigial structures?
They are not needed (we have enough teeth without them) and there is no room for them. Almost everyone needs to get them removed. They are more of a pain (literally) than they are worth.
What do they remove in an appendectomy?
The appendix is removed. The appendix is a vestigial organ found in the cecum. If it gets inflamed, it is removed and the surgery is called appendectomy.
What is vestigial side band transmission?
Vestigial sideband (VSB) is a type of amplitude modulation ( AM ) technique (sometimes called VSB-AM ) that encodes data by varying the amplitude of a single carrier frequency . Portions of one of the redundant sidebands are removed to form a vestigial sideband signal - so-called because a vestige of the sideband remains.
What is appurtenant structures?
Something that is attached to the structure that can be removed.
What are the main structures you could have observed when you removed the exoskeleton of the abdomen of a crayfish?
The large feathery structures are the gills.
Which is an example of vestigial structure?
Most of the "higher evolved" animals I can think of have a vestigial structure or two. The most common example given is of the vestigial leg structures that can be found in the back of whales. Ostriches can't fly so i think their wings are considered vestigial. Humans have a vestigial tail bone.
What are the main structures you could have absorbed when you removed the exoskeleton by a crayfish of the abdomen?
the tail
How do vestigial structures support the theory of evolution?
It shows that the organism once had a fully functioning organ/structure, but due to some kind of environmental pressure, that organ was no longer beneficial. Because it was no longer beneficial, it was actually detrimental, because the organism required energy to grow these organs, now wasted energy. Evolution's mechanism is natural selection. This organ is now being selected against, organisms that grew smaller ones now had an advantage over ones with larger ones. So over time, the average size of that organ within the population will shrink, and it will be considered vestigial when it no longer serves its original function. There's a reason why vestigial organs do not disappear completely, and that's because when the organ is so small and the organism is not wasting as much energy to grow it, it is no longer being selected against. Or in some cases the vestigial organ does have a tiny bit of use and is now beneficial.
How do disease affect natural selection?
Diseases are an agent of selection. Exposed animals that survive the disease process are the ones that live to reproduce. Individuals that succumb are removed from the gene pool. The mechanism of survival could be a more robust immune system or mutation(s) that is/are inherently immune for reasons other than immune response.
