Author Question: Describe Lamarckian evolution and the evidence for or against it. What will be an ideal ... (Read 93 times)

future617RT

  • Hero Member
  • *****
  • Posts: 543
Describe Lamarckian evolution and the evidence for or against it.
 
  What will be an ideal response?

Question 2

A study with London taxi drivers found that answering ____ activated their hippocampus more than answering ____.
 
  a. nonspatial questions; spatial questions
  b. spatial questions; nonspatial questions
 c. long questions; short questions
 d. short questions; long questions



miss.ashley

  • Sr. Member
  • ****
  • Posts: 371
Answer to Question 1

You may have heard people say something like, Because we hardly ever use our little toes, they get smaller and smaller in each succeeding generation.. This idea is a carryover of biologist Jean- Baptiste Lamarck's theory of evolution through the inheritance of acquired characteristics, known as Lamarckian evolution. According to this idea, if you exercise your arm muscles, your children will be born with bigger arm muscles, and if you fail to use your little toes, your children's little toes will be smaller than yours. However, biologists have found no mechanism for Lamarckian
evolution to occur and no evidence that it does. Using or failing to use some body structure does not change the genes. People's little toes will shrink in future generations only if people with genes for smaller little toes manage to reproduce more than other people do.

Answer to Question 2

b



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

For a complete list of videos, visit our video library