This topic contains a solution. Click here to go to the answer

Author Question: The example of extended lactose tolerance in humans tell us that A. it is entirely under genetic ... (Read 49 times)

awywial

  • Hero Member
  • *****
  • Posts: 577
The example of extended lactose tolerance in humans tell us that
 
  A. it is entirely under genetic control; researchers agree that the environment plays no role in its development.
  B. it is one of many aspects of human biology governed by both genes and by phenotypical adaptation to environmental conditions.
  C. the production of the enzyme lactase and the ability to tolerate milk remain the same among all human populations.
  D. people cannot increase their lactose tolerance, thereby discounting the theory of phenotypical adaptation.
  E. a simple genetic trait accounts for the ability to digest milk.

Question 2

Which of these statements is NOT true?
 
  A. Genetic drift can operate in any population, large or small.
  B. Fixation due to genetic drift is more rapid in large populations.
  C. Genetic drift is a mechanism of genetic evolution.
  D. Random genetic drift is a change in allele frequency that results from chance.
  E. Alleles can be lost by chance rather than because of any disadvantages they confer.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

amynguyen1221

  • Sr. Member
  • ****
  • Posts: 355
Answer to Question 1

B

Answer to Question 2

B




awywial

  • Member
  • Posts: 577
Reply 2 on: Aug 11, 2018
Great answer, keep it coming :)


laurnthompson

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

For a complete list of videos, visit our video library