Imagine a population of giraffes- some with short necks, some with mid-length ne
ID: 152448 • Letter: I
Question
Imagine a population of giraffes- some with short necks, some with mid-length necks, and some with long necks. Over time trees get taller and it is helpful for giraffes to have longer necks that can reach the leaves. Which of the following statements best describes what will happen under a model of evolution via the INHERITANCE OF ACQUIRED CHARACTERISTICS (Lamarck)? Question 2 options: Over time ALL of the giraffes will have long necks because natural selection will select long necks as favorable and cause all giraffes with long necks to survive. Those with mid-length or short necks will eventually die off. Over time ALL of the giraffes will have long necks because they will work to lengthen their necks in each generation, passing those longer necks on to their kids. Over time MORE of the giraffes will have longer necks, but there will still be some with mid-length and short necks. There will be NO CHANGE in the population since evolution via natural selection is not designed to create populations with a perfect form (i.e., long necks).
Explanation / Answer
1.Lamarck is best known for his Theory of Inheritance of Acquired Characteristics, first presented in 1801 (Darwin's first book dealing with natural selection was published in 1859): If an organism changes during life in order to adapt to its environment, those changes are passed on to its offspring.
so,the answer is,Over time ALL of the giraffes will have long necks because they will work to lengthen their necks in each generation, passing those longer necks on to their kids.