The stage of mitosis when chromosomes condense to form rod-shaped structures visible under the microscope is called

A) interphase.
B) prophase.
C) metaphase.
D) anaphase.
E) telophase.


B) prophase.

Biology & Microbiology

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Deng Xiaoping launched China's "Four Modernizations" in the 1980s to reorganize and revitalize its

A) economy. B) political system. C) Olympic program. D) international reputation. E) human rights policies.

Biology & Microbiology

Approximately 3.5 million years ago the Isthmus of Panama formed. This new landmass severed the connection between the Pacific Ocean and the Caribbean Sea. An ancestral fish population (porkfish) was split in two by this event; the two populations no longer interbreed and are two distinct species. This type of speciation is called

A. parapatric speciation. B. hybridization. C. sexual selection due to ecological variation. D. sympatric speciation. E. allopatric speciation.

Biology & Microbiology

A freshwater fish would be expected to __________.

a. pump salt out through salt glands in the gills b. produce copious quantities of dilute urine c. excrete urea across the epithelium of the gills d. have scales that reduce water loss

Biology & Microbiology

Which of the following is true of the life cycle of mosses?

A) The haploid generation grows on the sporophyte generation. B) Spores are primarily distributed by water currents. C) Antheridia and archegonia are produced by gametophytes. D) The sporophyte generation is dominant. E) The growing embryo gives rise to the gametophyte.

Biology & Microbiology