Although selection tends to eliminate deleterious alleles from populations, these mutations often persist because they are frequently created again
The rate at which deleterious alleles are being eliminated by selection is exactly equal to the rate at which new copies are being created by creation is termed ________. [three words] Fill in the blank(s) with correct word
mutation-selection balance
You might also like to view...
Cystic fibrosis (CF) is an autosomal recessive disorder caused by faulty chloride ion channels in cells lining of the lungs and the pancreas. A man and woman, with no CF symptoms, have an unaffected boy and a daughter with CF. The gene responsible for CF is located on:
a. The X-chromosome b. The Y-chromosome c. One of the human chromosomes 1=12
A relationship between two organisms in which both members benefit is said to be
(a) parasitic. (b) saprotrophic. (c) mutualistic. (d) heterotrophic.
A bean pod is
(a) a seed container. (b) a fruit. (c) a part of the stamen. (d) both a and b.
Which statement about temperate broadleaf forests is true?
A) Temperate broadleaf forests have a narrow range of temperatures over the course of a year. B) Oak, hickory, birch, beech, and maple are common trees in temperate broadleaf forests. C) Temperate broadleaf forests have very poor soil. D) Temperate broadleaf forests are less open than tropical rain forests.