Which of the following processes generates a continuum (spectrum) of varying phenotypes?
A. Incomplete dominance
B. Single-gene traits
C. Multiple alleles
D. Polygenic inheritance
Answer: D
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Which of the following are NOT found within the photosynthetic gene cluster of Rhodobacter (a purple phototrophic bacterium)?
A) genes encoding reaction center and light-harvesting photocomplexes B) genes encoding proteins involved in phycobiliprotein biosynthesis C) genes encoding proteins involved in bacteriochlorophyll biosynthesis D) genes encoding proteins involved in carotenoid biosynthesis
Cephalization is associated with bilateral symmetry
Indicate whether the statement is true or false.
The result of double fertilization in an
angiosperm is
a. two embryos. b. an embryo and a megaspore c. an embryo and endosperm. d. an embryo and a pollen grain. e. an embryo and a female gametophyte.
The pathologic state involving the disruption and destruction of tissues by microbes is referred to as a(n) _____ disease
Fill in the blank(s) with the appropriate word(s).