science

posted by .

Analysis of forelimb anatomy of humans, bats, and whales shows that humans and bats have fairly similar skeletal structures, while whales have diverged considerably in the shapes and proportions of their bones. However, analysis of several genes in these species suggests that all three diverged from a common ancestor at about the same time. Which of the following is the best explanation for these data?

  • science -

    You gave no choices.

  • science -

    a. Evolution of human and bat forelimbs was adaptive, but not for whales.
    b. Humans and bats evolved by natural selection and whales evolved by Lamarckian mechanisms.
    c. Whales are not properly defined as mammals.
    d. Natural selection in an aquatic environment resulted in significant changes to whale forelimb anatomy.
    e. Genes mutate more rapidly in whales than in humans or bat

  • science -

    I am thinking a, if they mean adaptive radiation...

  • science -

    does anyone know?

  • science -

    I would choose d.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Need your help!!!! Plzzzz (whales)

    I think someone ask the question before, however, i wanted to find a rationale about whales: the rationale should include why it is important for elementary students to know or learn about whales. Like Sarah, I have been having problems …
  2. biology

    In Aristotle's system of classification, which two animals would be grouped together (A)segulls and lizards (B)seals and bats (C)snails and butterflies (D)whales and fish
  3. math

    BLIND BATS AT HALLOWEEN There were number of bats in a cave. Two bats can see out of right eye, Three bats can see out of left eye, Four can't see out of left eye, and Five can't see out of right eye. What is the least number of bats …
  4. math

    a baseball team buys 15 bats for $405. aluminum bats cost $25 and wooden bats cost $30. how many of each type did they buy?
  5. math, inequalties

    THIS SEASON, NORA HAS 125 AT BATS IN SOFTBALL. BY THE END OF THE SEASON SHE WANTS TO HAVE AT LEAST 140 AT BATS. HOW MANY MORE AT BATS DOES NORA NEED TO REACH HER GOAL?
  6. biology

    Aristotle's system of classification, which 2 animals would be grouped together?
  7. Statistics

    The world’s smallest mammal is the bumblebee bat. Such bats are roughly the same size of a large bumblebee. Listed below are the weights (in grams) from a sample of these bats. Assuming that all such bats have a standard deviation …
  8. Math - Ratios

    The ratio of wood bats to metal bats at a sporting goods store is 2:7. After 10 metal bats are sold, the ratio of wood bats is 3:8. How many wood bats are there at the store?
  9. science

    Could you please check my answers? Question one: When evolution was first proposed, which of the following was used as evidence as support?
  10. math

    Scientists randomly caught 30 fruit bats at an orchard. They tagged the fruit  bats and then released them. Several weeks later, they captured 20 fruit bats at the same location. They found that 4 of those fruit bats  …

More Similar Questions