The interaction between two species in which both species may be harmed is known as ____
a. parasitism
b. mutualism
c. competition
d. predation
e. commensalism
ANSWER: c
You might also like to view...
Which of the following was observed by Erwin Chargaff?
A. Base composition of DNA does not vary from one species to another. B. The DNA isolated from different tissues of the same species all have the same base composition. C. Base composition changes as the organism ages. D. In all species, the number of adenines equals the number of guanines. E. In all species, A + T = G + C.
Allergy is a(n) ____ response to ____ antigens
a. overactive; environmental b. underactive; environmental c. overactive; cellular d. underactive; cellular e. normal level; microbial
Suppose that crossing-over during meiosis occurs within a region where one of the homologous chromosomes has an inversion with respect to the other homolog. Which chromosomal alterations would you expect to find in the gametes produced by this organism?
a. balanced translocations b. translocations c. both duplications and deletions
In a human zygote, where did most of the cytoplasm come from?
A) spermatogonia B) oocyte C) polar bodies D) sperm