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Which of the following is not true for a species -
A
Members of a species can interbreed
B
Variations occur among members of a species
C
Gene flow does not occur between the populations of a species
D
Each species is reproductively isolated from every other species
Detailed Solution
According to the biological species concept, a species is a group of natural populations whose members can interbreed and produce fertile offspring, and which is reproductively isolated from other such groups.
Members of a species can interbreed; true.
Variations always occur among the members of a species; true.
Each species is reproductively isolated from every other species; true.
Because the populations of a species can interbreed, genes move between them through migration and mating; this gene flow keeps the species together as one unit.
So the statement that gene flow does not occur between the populations of a species is not true.
Members of a species can interbreed; true.
Variations always occur among the members of a species; true.
Each species is reproductively isolated from every other species; true.
Because the populations of a species can interbreed, genes move between them through migration and mating; this gene flow keeps the species together as one unit.
So the statement that gene flow does not occur between the populations of a species is not true.