Which of the reproductive isolating mechanisms given below is postzygotic?

A (Hybrids form but are sterile.

B (The mating season is different.

C (Flowers are pollinated by different insects.

Which of the following statements about anthrax is untrue? A) The agent has potential for use as a terrorist weapon. B) The agent is a spore-forming bacterium. C) The inhalational form is untreatable.

For cells to stay the same size from generation to generation, what two things must be coordinated?

A population of antelope has a negative population

A maritime polar air mass is a cold air mass that forms over which two oceans? a. Atlantic and Indian Oceans b. Pacific and Atlantic Oceans c. Pacific and Indian Oceans d. Arctic and Indian Oceans

Which is the most easiestanimal to research about?

Which types of organisms are most vulnerable to overfishing, and why? A. Small fish that live a short time and reproduce quickly, since their population numbers are always highest. B.

Which comes first: embryonic development or fetal development?

True or false: During meiosis, two rounds of DNA synthesis are required to form four gametes from one parent cell.

In 1665, Robert Hooke, an English scientist, published his book Micrographia, in which he described that pieces of cork viewed under a microscope presented small cavities, similar to pores and filled with air.

Why is it virtually certain that except for identical twins, even offspring of the same parents will not be genetically identical?