A. the genes drift from a locus on one chromosome to a locus on another chromosome.
b. the genes drift out on a raft to sea to found new populations on islands.
c. the genes do not drift at all — drift is a mathematical metaphor for mean gene frequencies being unstable and drifting from one number to another.
d. the genes drift from a locus on one chromosome to another locus on the same chromosome.
e. the genes drift into and out of the population due to migration of individuals from one population to another.

Study the picture of the ocean. which is the best example of an organism’s niche shown in the picture? a. the environment contains several of the same species of coral. b. the shallow area of the ocean meets the needs of the coral and the fish. c. the ocean has fish and coral that live in the same area. d. the coral take in food from the water and provide shelter for the fish.

What is the main fuel source for the work of the cell

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.