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How would Lamarck have explained the length of a giraffe's neck?
Wiki User
∙ 11y ago
because their ancestors stretched their necks reaching for food
Dimitri Welch
Wiki User
∙ 9y agoDarwin's explanation of Giraffes having long necks would involve the longest-necked giraffes surviving, and then their children exhibiting more survival-important characteristics. This is in contrast to Lamarck's explanation, where the giraffes stretch their necks as they reach for higher leaves, and this characteristic being passed down because it had changed in the parent. Modern Biology easily disproved Lamarck's idea of changed traits being inherited.
Wiki User
∙ 12y agoIt was first Lamarck who suggested that if a giraffe stretched its neck reaching for leaves its offspring would have long necks. However, if you take Darwin's theory of evolution if would be that giraffes could only eat leaves that were on very high trees so therefore the giraffe would grow a long neck over time.
Wiki User
∙ 13y agoNatural selection.
Since the leaves in the tall trees are the food of giraffes, the tallest giraffes get the most food, live the longest, and produce the most offspring.
The genes for "long necks" are passed on. Any "short necked" giraffes would suffer malnutrition and not live to produce offspring.
Wiki User
∙ 13y agoThe animals with longer necks are more likely to survive, because they can reach their food better. The tall genes are inherited to their children, of whom the one with the longest neck is most likely to survive. This can also be used to breed animals withe special characteristics like dogs with long ears.
Wiki User
∙ 11y agoHe would have said that the giraffe, seeing the succulent higher leaves on the tree, would have had a " desire " for a longer neck and would have stretched it's neck towards the leaves enough that it's descendents would then inherit this longer neck.
Pure poppycock!
Wiki User
∙ 11y agoit stretched and stretched and stretched to get the yummy food on top of the tree and after some stretching the neck got longer. Can evolution/adaption to survive.
Wiki User
∙ 12y agohe would say that they would have to be able reach food in high treesa, so their necks grew.
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Darwin and Lamarck had different ideas about why all giraffes now have long necks why?
Lamarck would have said that the ancestors of modern-day giraffes had short necks but stretched their necks as they tried to reach leaves in trees; so, their descendants were born with longer necks. Darwin would have said that in a population of ancestral giraffes, some had slightly longer necks than others; the long-necked giraffes were better able to feed on tree leaves and as a result produced more offspring. Over time, the proportion of longnecked giraffes in the population increased.
How would vestigial traits be explained if evolution occurred via inheritance of acquired characters as proposed by Lamarck?
as a change in an individual's phenotype in response to an environmental challenge
Why did Darwin think giraffes are a good example of natural selections?
Actually, it was Lamarck who earlier introduced the giraffe as an example for evolution - Lamarckian evolution, to be sure. Lamarck proposed that there was some mechanism by which the short-necked ancestors of giraffes could acquire a change such that their offspring would have necks better suited to their needs. Darwin applied natural selection to the same example mainly because it had already been discussed in such detail.
If Lamark and Darwin had debated why giraffes have such long necks how would their explanations differed?
Lamarck would have said that the ancestors of modern-day giraffes had short necks but stretched their necks as they tried to reach leaves in trees; so, their descendants were born with longer necks. Darwin would have said that in a population of ancestral giraffes, some had slightly longer necks than others; the long-necked giraffes were better able to feed on tree leaves and as a result produced more offspring. Over time, the proportion of longnecked giraffes in the population increased.
Did Lamarck believes that giraffes came to have long necks through stretching their necks?
Lamarck believed that acquired traits could be inheritable. So as each generation voluntarily extended their necks, their genetics changed, allowing them to have offspring with their necks already that length.On the other hand, Darwin would have said that the genes mutated on their own and that shorter giraffes would be unable to reach enough food and die. The rest would in turn live to pass on their beneficial genes for longer necks.
Who are Darwin and lamark?
Charles Darwin was a naturalist and the author of On the Origin of Species. Darwin believed that species evolved though random mutation, with mutations that caused a beneficial change being more successful than those that caused maladaptive or no change. He called this process "natural selection."Jean-Baptiste Lamarck was a naturalist who believed that creatures could change during their own lifetime, acquiring characteristics in response to changes in the environment, which they could then pass on to their offspring.For example, we know that giraffes have long necks. Lamarck would say that giraffes with shorter necks would stretch high to reach leaves in the tops of trees. This would stretch their necks. Their offspring would then be born with longer necks. Darwin said that short-necked giraffes would have competition with other grazing animals, so giraffes with even a slightly longer neck would be able to eat leaves that antelope and other grazers couldn't reach. These giraffes would be more likely to be well fed and reproduce, and pass their longer necks along to their offspring.We now know that, with some limitations, Darwins theory is corect.
How did Lamarck think species evolve?
Lamarck's theory is that an organism can pass traits to their offspring that they have acquired in their lifetime. One example commonly used is that he felt giraffes acquired long necks because of generations of them stretching and trying to reach higher leaves on the tree. He thought that these stretched muscles would be passed down to their offspring. This has been proven wrong because this is not how evolution takes place. If you would cut off the tails of two mice and then breed them their offspring would not have short tails.
How would Lamarck have explained the large eyes of an owl?
Darwin would have said that a few owls were born with bigger eyes. The owls with the big eyes would survive better and have more offspring so the owls with small eyes were less common untill there were only big eyed owls. This is called natural selection.
How old is Jean-Baptiste Lamarck?
Jean-Baptiste Lamarck was born on August 1, 1744 and died on December 18, 1829. Jean-Baptiste Lamarck would have been 85 years old at the time of death or 270 years old today.
Is Lamarck or Darwins theory more credible?
Darwin's. Duh. Lamarck believed in evolution by acquired traits; i.e., if a blacksmith hammers all day, his arm becomes strong. By Lamarck's theory, the blacksmith's strength would be transferred to his offspring, but this is never observed.
Can a man evolve if he so wants it - let's say that in order to survive he would have to grab a fruit from a tree he can't climb or throw something to bring it down - can he grow long legs or arms?
Haha, you should look up Lamarck's giraffe theory. To answer your question, no, species don't magically "evolve" to their needs. The widely accepted view of evolution by the scientific community these days is actually called Evolution by Natural Selection (ENS). It means that species evolve over time (generations) because for example, giraffe's long necks in the case of grabbing a fruit from a tree, because mutations in genes cause different giraffes to have different length necks, but all the giraffes that can't grab the fruit will die out (natural selection), leaving only the giraffes with long necks, and these giraffes will pass the long neck gene to their offspring, and their offspring, etc. Hope this helps.
What giraffes are good for zoos?
giraffes should not be teased its not like they are bad animals they actually are endangered now so if people want to tease the giraffes you would be better off not teasing giraffes
