What is the smallest unit of evolution?

A. individual organism
B. a group of organisms belonging to the same species
C. a group of organisms of the same species living together in the same geographical area at the same time
D. a population
E. Both C and D are correct.


Ans: E. Both C and D are correct.

Biology & Microbiology

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

Biology & Microbiology

The clearing made by bacteriophages in a "lawn" of bacteria on an agar plate is called a ________

A) plaque B) phage zone C) lysogenic zone D) host range E) prophage

Biology & Microbiology

Which of hte following would be a position held by someone that believed in the punctuated equilibrium theory?

a. Most evolutionary change occurs during relatively short times of dramatic change or enviromental challenges. b. There is a continuous slow gradual change from one species to another species c. One should expect to find many transitional fossils left by organisms in the process of forming a new species d. Natural selection plays a very minor role in the mechanism of evolution e. Given nough time, most existing species will gradually evolve into mew species

Biology & Microbiology

Which of the following is not a characteristic of Bicoid protein?

A. Bicoid is a maternal gene product. B. Throughout the first seven nuclear divisions, Bicoid concentration is higher in the anterior pole than the posterior pole. C. Bicoid represses Hunchback in the posterior pole. D. Bicoid is a transcriptional activator of many segmentation genes.

Biology & Microbiology