1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
brilliants [131]
3 years ago
6

Lamarck proposed two ideas to explain

Biology
2 answers:
Aliun [14]3 years ago
6 0

Answer:

qwertyuiop

Explanation:

Lamarck and Evolution

What do you think of when you hear the word evolution? Most people would mention Charles Darwin, the scientist who first proposed the theory of natural selection. But did you know that Darwin’s work was built on the ideas of another scientist? More than 50 years before Darwin’s voyage on the Beagle, French biologist Jean Baptiste Lamarck formulated ideas of evolution that attempted to explain changes he saw in living things.

Born in France in 1744, Lamarck served in the French army before he began to study botany and medicine. In 1778, he published Flore Française, a book on the plants of France. Later, he was appointed a professor at the National Museum of Natural History in Paris, where he studied invertebrates. What he saw in the specimens he classified intrigued him. He found that there were unexpected similarities among organisms, and he tried to find a way to explain them.

Inheritance of Acquired Characters

In 1801, Lamarck put forth a hypothesis that included several ideas very different from what we now know about evolution. His most well-known idea involves “inheritance of acquired characters.” He thought that during their lifetime, organisms could change in response to a changing environment and that they could pass on those acquired traits to their offspring. If organisms began to use part of their bodies in new ways, their bodies would change to accommodate these uses.

For example, Lamarck observed that giraffes had long necks and ate leaves from tall trees. He hypothesized that giraffes once had short necks. Individual giraffes stretched their necks to reach leaves on trees, and their necks grew longer in response. When these giraffes reproduced, he thought, their offspring inherited their longer necks. Lamarck also hypothesized that if organisms stopped using parts of their bodies, those parts would shrink and either become useless or cease to be part of the organism. He cited the human appendix as an example.

Evolving to “Perfection”

Lamarck thought that plants and animals came into being through spontaneous generation, or from nonliving substances. At first, he thought, they were simple organisms, but they had an innate urge to become more complex and “perfect,” and this is why they changed. Lamarck believed that because there were simple organisms and more complex organisms living side by side in the world, new simple organisms must be constantly coming into existence via spontaneous generation. Lamarck did not believe in extinction. He thought species that had disappeared had simply evolved into another type of organism.

In Lamarck’s view, giraffes developed long necks because they continually stretched their heads upward to eat leaves on tall trees.

Today, we know that organisms do not come into being via spontaneous generation. We also know that organisms cannot pass acquired traits to their offspring. Still, Lamarck can be credited for recognizing that organisms change through time through natural processes that can be explained. In addition, Lamarck recognized that offspring inherit traits from their parents. Both these ideas are important to our modern understanding of evolution.

gulaghasi [49]3 years ago
5 0
How organisms change through time
You might be interested in
Where is the medial on the pig?
VLD [36.1K]

Answer:

its the midline, or the middle of the pig

Explanation:

4 0
3 years ago
Which of the following is a function of a vacuole
Andrews [41]
Typically, a vacuole's job consists of isolating harmful materials, storing waste products, storing water in a plant cell, helping maintain the pressure within a cell, and exporting products out of the cell.
5 0
3 years ago
Hi friends i need ur help!! asap
Lelu [443]
With what?
What do you need help with
8 0
3 years ago
Read 2 more answers
What season do birds call for mates and build nests
zalisa [80]

Answer:

the spring time is when they call for mates

7 0
2 years ago
Read 2 more answers
When oxygen first was released in the early seas it combined with iron to form
Liono4ka [1.6K]
“D” would be the best answer choice for me.... not sure if it’s correct though
3 0
3 years ago
Read 2 more answers
Other questions:
  • .   Which variable stars have pulsation periods between 1.5 hours and 1.2 days? 
    14·2 answers
  • Which cup is more denser? The one with the rice or the one with popcorn?
    10·1 answer
  • Explain why an increased breathing rate accompanies exercise. What would happen to the individu
    5·1 answer
  • Which of the four nonrenewable energy resources we learned about does not produce carbon emissions?
    5·1 answer
  • Please help i don't get it
    5·1 answer
  • Biotic components of an ecosystem are alive.<br> -True<br> -False
    15·2 answers
  • How might nitrogen fixation and denitrification be similar to different parts of the water cycle?​
    10·1 answer
  • PLEASE solve number 1 and 2 because i don’t get it , don’t mind my answers
    9·1 answer
  • Hello there,can you say what's biology?
    6·1 answer
  • Nick is smiling even though he does not feel happy. After a short time he feels happier. The best explanation for Nick's change
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!