Mendel′s laws are only valid under the presumption that:

a. the case in point is monogenic heredity
b. the genes observed are in linkage
c. the genes for the traits observed are localised on one chromosome
d. if the genes observed are linked to chromosome X

In general in which direction does wind blow

Which would be the most useful source of evidence to support mcneill's contention?

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.