0
Did Lamarck believes that giraffes came to have long necks through stretching their necks?
Wiki User
∙ 9y ago
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.
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoLamarck theory is based on acquired character. This acquired character cannot be transmitted to the off springs.
It is a common observations that holes in ears or nose and amputation of organs do not appear in off springs of such organisms. Modern genetics says that changes in somatic cells can not be transmitted to the next generation.
So Lamarck theory is rejected by science.
Wiki User
∙ 15y agoGiraffes used to have short necks but the use of their necks made them grow.
Add your answer:
Earn +20 pts
Which of the following ideas proposed by Lamarck was later found to be incorrect?
Lamarck thought characteristics, such as a giraffes long neck were caused by them stretching it during their lives and passing that onto their offspring - saying acquired characteristics were passed on through genetics. What actually happens is natural selection, which means the giraffes born with long necks (by slight mutations or chance) survived better than the ones with shorter necks, as they were able to eat better, so they were able to breed and pass on the genes for long necks where the short necked giraffes died. This theory was thought of by Darwin.
What did Jean-Baptiste Lamarck do?
Lamarck hypothesized that organisms evolved through the inhertitance of acquired charactaristics.
What did lamarck propose a scientific explanation for?
Lamarck hypothesized that organisms evolved through the inhertitance of acquired charactaristics.
Lamarck thought acquired characterisctics could be inherited?
Lamarck put two ideas into his theory of evolution thought to be true in his time.1. Use and disuse - people lose characteristics they don't use and keep the other ones .2. Individuals inherit the traits of their ancestors.So instead of the environment selecting traits, he said that the species selected the traits.Examples of what is traditionally called "Lamarckism" would include:1. Giraffes stretching their necks to reach leaves high in trees (especially Acacias), strengthen and gradually lengthen their necks. These giraffes have offspring with slightly longer necks (also known as "soft inheritance").2. A blacksmith, through his work, strengthens the muscles in his arms. His sons will have similar muscular development when they mature.
How were lamarck's beliefs different from Darwin's?
Lamarcks theory was accepted during Darwin's life, stated that an orgnisims use or disuse of an organ lead to its refinment. That parents could pass on traits acquired during its life to its offspring. Darwin stated that changes in offspring were random and could not be modified by the parents actions. Evolution was still the same, changes accumulating over time, but how those changes came about, through the organisim its self, lamark, or randomly Darwin.
What was lamarck's incorrect hypothesis regarding inheritance?
Lamarck's incorrect hypothesis regarding inheritance.... Lamarck did not know how traits were inherited (Traits are passed through genes) Genes are not changed by activities in life. They change through mutation occurs before an organism is born.
Where did Darwin meet Lamarck?
Darwin did not actually meet Lamarck in person. Lamarck's ideas on evolution were published before Darwin's time, and Darwin was familiar with them through his readings. Darwin's theory of natural selection differed from Lamarck's theory of inheritance of acquired characteristics.
What did Lamarck propose a scientific explanation for and why?
Lamarck proposed a scientific explanation for evolution because organisms evovled through the inherititance of acquired charactaristics.
What are the movements of giraffes?
giraffes have sex all the time through the bum hole... with their necks. that is their movement..
How do giraffes feed?
by eating food through their mouthes!!!!
Do giraffes give birth out of their butt?
No. Giraffes give birth through the vagina or birth canal, which is very close to the anus.
What is the contract antagonist-relax method of stretching?
stretching that facilitates and increase in muscle length through isometric contraction
