The observation of a range of phenotypes in a genetic trait is ____
a. pleiotropy
b. genomic imprinting
c. codominance
d. penetrance
e. continuous variation
ANSWER: e
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To establish itself in a host, a microbe must:
a. survive immune system defenses b. utilize a portal of entry c. be able to adhere to host tissue d. damage and destroy host tissue e. produce toxins and exoenzymes
Since proteins are encoded by nucleotide sequences, the proteome of a microorganism can be readily inferred from the given complete nucleotide sequence of a genome and a high-speed computer with specialized software.
Answer the following statement true (T) or false (F)
Which of the following statements about fish gills is true?
A) They have a large surface area. B) Because of their efficiency, they only need a small surface area. C) They have a poor blood supply. D) Like lungs, they have an exhale/inhale function.
Two species of salamander have similar ranges, but one breeds from January to March, while the second one breeds from March to May. This is an example of
A. habitat isolation. B. behavioral isolation. C. mechanical isolation. D. gametic isolation. E. temporal isolation.