Can animals adapt to their habitat at all? Or is it, for example, just a coincidence that an individual or mutation emerges that proves to be more advantageous, thus allowing only that individual and its offspring to survive?
Please help me and please only answer if you know 100%.. I'm totally confused 🙁
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Loading...Hello everyone, I recently woke up at 2 a.m. because I heard noises outside in the garden. They sounded like human footsteps. We have a gravel path, and you can hear people walking across it. The next morning, I found strange, relatively deep holes in the lawn. I live outside of town near the edge…
So, for a chicken to lay eggs, it has to be impregnated. I just imagine it's really bad, since they have to lay eggs every day and live in a cramped cage. Does it happen artificially? I don't know, I imagine it's really bad.
I have to make a tree diary like this and I'm missing November… Can anyone help me?
Hello, my rabbit lives in a large garden. She basically only eats grass. I occasionally give her kohlrabi leaves. What should I feed her so she can gain weight quickly?
Sometimes he licks my hand for minutes as if it were a T-bone steak, closing his eyes and purring. Do all cats do that, and why does he like it so much?
If, for example, a fish is born without pebbles, then he dies. But if a fish with a stronger muscle is born, so that it can swim faster, then it can probably swim away its enemies, and when multiplying, this better muscle is inherited. So the enemies die, who are after-floating and get nothing eaten, but those who cheer up the “improved” fish will get more to eat and inherit this hunting tactics. For example, the adjustment can be explained relatively easily.
ensure that they are immediately inherited or that several generations take?
It can be inherited directly, but you can, for example, inherit from your grandparents who didn’t have your parents, that’s always “random” (the Mendelan rules).
In which class you are, because with the generations we have just in organic (10 class) and that has what to do with dominant and recessive alleles
http://www.biosicherheit.de/lexikon/1392.dominant-rezessiv.html The last sentence is meant
There are always random mutations. And (this has already recognized Darwin). The mutations, which are best adapted to the life situation, have the best chances of getting through. And thus the genetic material of these mutants is becoming more and more effective. So take the English butterflies in the industrial revolution. There were always a few who randomly had dark wings. And they could then be better disguised in the fascinated areas and were better protected from eating enemies. And this results in the fact that the originally few randomly created dark butterflies have survived more easily and have passed on their genetic material, which gives more and more dark butterflies, which were also better protected, etc. until the one butterfly type in the whole population had the dark color.
Hello privacymelody,
You really understood it. The mutations are random. The most neutral, some change the phenotype to the disadvantage of its carrier, some to the advantage – and these individuals have a little more offspring on average, so they can give their genes more often on average.
The selection pressure from the outside is, however, concrete, so that the selection is not effected randomly, but is directed in accordance with the environmental conditions.
I think this little YouTube movie explains it very nicely:
https://www.youtube.com/watch?v=QK8_FCrNuTg&feature=youtu.be
Greetings
This is at least the theory of evolution. It didn’t even think of a lizard at some point: “Hey, feathers would be practical, then I could fly too,” but it was a coincidence that springs developed and proved to be advantageous. Evolution is not a conscious process that is somehow controlled.
Thank you, I want to hear:) have really calmed me because tomorrow bioworking:0
The term “art” (species) is the totality of all individuals of living beings, who bear fruitful descendants together, that is to say can share their inheritance (“gene pool”). There are many variants within a kind, each individual being belonging to a kind has a (often low-grade) different genetic equipment. There are thousands of different dog breeds and every person looks a little different. Only twins having the same genetic material (very largely) look similar to each other for confusion.
The different properties (size, color, temperament, bone construction, etc.) give a different ability to cope with life. Those variants of the species that have beneficial properties in terms of the environment in which they live (exercise) will have on average more aftercompensation. Therefore, these variants are more likely to prevail in the course of many generations. About a pretty peacock will be able to settle more females than an inconspicuous one. How long (such as many generations) this process of enforcement (selection, selection) takes depends on whether the property is beneficial or very beneficial, or is overwhelmingly beneficial. In special cases, some decades are sufficient, but evolution usually takes place in millennia or millions of years.
One example is the butterfly “Birkenspanner” (reader DerTroll). He lives on the birch bark and has a color pattern that makes him almost invisible on the birch bark. When the soot had darkened the birch bark, variants had prevailed within a few years, which had darker colouring and were therefore protected from frying fines. And the ancestors of today’s giraffes had short necks, only a few variants had (first) somewhat longer necks. Only when a change in the environment gave rise to the need to eat the leaves high above the trees, the longer-necked giraffe variants had a survival advantage (“selection advantage”) and the species developed towards longer necks.
In many cases, a certain property of a variant is capable of survival in an environment in which the species concerned has not survived so far. For example, variants of hares, wolves, chickens, bears with a white coat are disadvantaged in the environment of the type concerned, the variant does not prevail. However, if the variant reaches an area with frequent snowfall, then the white color proves to be an advantage.
And how are the variants created? By blind coincidence! Unspecific influences such as radiation or “genetoxic” substances (for example from the mold) can change the genetic material in gender cells a little. Significant changes usually lead to the death of the cell. If the random change of the genetic material (“mutation”) results, exceptionally, in a change in the appearance (“phenotype”), which is beneficial, then a variant with the U.S. advantage has arisen.
Your second thought is right. This is exactly the basic idea of evolution. Animals of a kind are always slightly different and mutations also occur. The ones that are better adapted from themselves than their fellows survive better and continue to grow. The animals living today are therefore descendants of better adapted animals and are therefore adapted today (for example better camouflaged etc.). If the living conditions are changing (and they always do that very easily) then again other features will be advantageous and evolution continues in another direction.
depends on adaptability! Some can adapt everywhere, others need specific properties, otherwise they die out. Allrounders thus have better chances of survival than specialists who have an advantage only in their special segment
Animals adapt very well to their habitat. In coral reefs, for example, fish are colorful, mostly brown in other waters. This is mainly because the animals want to disguise.
It is not a “incidence” that such mutations exist – these are simple things that are known as useful in the course of time (see whales – formerly on land)
It’s a coincidence. And where: that then proves to be useful, it goes through and remains preserved. But whales have not decided to develop into aquatic animals. That was all coincidence. That such mutations and changes are created is coincidence. It’s not that they’re going through.
Meanwhile, “master coincidence” has less and less space even in the mutations. Contrary to the usual teaching, the genes are influenced by the environment. In a magazine, I think “spectrum of science”, there was an article that explained which genes “shift” under what conditions.
Adaptation is not everything. The organisms are not passive playballs of external natural forces, but also have an influence on their environment. Evolution is a complicated interplay between life and the environment.
Birds have adapted to the sky by aerodynamic bodies and light bones. Fish have kiemen, climbing monkeys long tails, etc…
but I mean that the giraffes used to have a short one. Neck and now a long way is this?
There have always been giraffes that had longer necks, which came to more food, so they could better reproduce. Longer necks thus offered a selection priority, so the “Urgiraffes” had better chances of planting the longer their necks were. And they inherited that from their descendants.
This has developed in some way, just like all forms of life that come from individuals. Even we humans have learned to go straight. There is probably no exact explanation…
make sure it is immediately inherited or does it take longer generations?