Which allele combination represents a female who is a carrier for an X-linked recessive disorder?

Which of the following is not a defining characteristic of plants?

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

As scientist had investigated evolution from a variety fields they have found