You decide to study two species of birds, both of which form monogamous pairs (one male and one female). In species 1, you find that the eggs in a pair's nest are in fact almost always the offspring of that pair
In species 2, you are surprised to find that many of the eggs in a nest were actually fathered by males of neighboring pairs. Apparently, mating outside of monogamous pairings is widespread in species 2. Given this information, what would be the logical prediction to make before comparing testes size of males of the two species?
A) Testes of species 1 are larger than testes of species 2.
B) Testes of species 2 are larger than testes of species 1.
C) There is no relationship between this observation and the size of testes.
Answer: B
You might also like to view...
Which of the following would not be an example of structure determining function?
A. the highly branched trachea of insects B. the electrical connections between cardiac muscle cells C. the tight packing of epithelial cells on top of the basal lamina D. the brush border of the small intestine E. All of these choices are examples of structure determining function.
A drug researcher has developed a macromolecule that can bind to scrapie and thus change the prions conformation. What effect might this have on the actions of scrapie?
A. The shape change could prevent the scrapie protein from converting normal proteins to scrapie proteins B. The shape change could induce scrapie protease activity C. The shape change could stop the transcription of scrapie RNA D. The shape change could stop the replication of scrapie DNA E. The shape change could block the translation of scrapie RNA
Embryonic development begins with a single egg fertilized by a single sperm, forming a zygote which then divides by
mitosis. How many cells are present in the embryo at the conclusion of four mitotic divisions?
a. 2 b. 4 c. 8 d. 16 e. 32
Homo erectus:a
was shorter than Homo habilis. b. had a larger brain than Homo habilis. c. had more pronounced sexual dimorphism than Homo habilis. d. was the first member of the genus Homo without pronounced supraorbital ridges. e. did not use tools.