« previous next »

Author Question: In seedcracker finches from Cameroon, small- and large-billed birds specialize i (Read 636 times)

Garrulous

  • Hero Member
  • *****
  • Posts: 686
on: Jul 9, 2013
In seedcracker finches from Cameroon, small- and large-billed birds specialize in cracking soft and hard seeds, respectively. If long-term climatic change resulted in all seeds becoming hard, what type of selection would then operate on the finch population?
A) disruptive selection
B) directional selection
C) stabilizing selection
D) No selection would operate because the population is in Hardy-Weinberg equilibrium.


Hawke

  • Hero Member
  • *****
  • Posts: 679
Reply #1 on: Jul 10, 2013
Hello

B is the answer.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Estimating cicada population size and predation rates by birds. Estimating cicada population size and predation rates by birds.
Anatomy of the large intestine Anatomy of the large intestine
Large facial tumor due to malignant Burkitt’s lymphoma, a non-Hodgkin’s lymphoma. Large facial tumor due to malignant Burkitt’s lymphoma, a non-Hodgkin’s lymphoma.
Small Plates Small Plates
Collage of Intelligent Birds Collage of Intelligent Birds
Summary of digestion and absorption in the small intestine Summary of digestion and absorption in the small intestine
Video: Heart Chambers

For a complete list of videos, visit our video library