The most abundant group of seedless tracheophyte plants are the
A. club mosses.
B. horse tails.
C. angiosperms.
D. ferns.
E. gymnosperms.
D. ferns.
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The transcribed and translated region of a gene is the ________ region.
A. coding B. trailer C. promoter D. leader
Heritability can only be measured for
A) traits with phenotypic variance. B) traits with genotypic variance. C) discrete traits. D) polygenic traits. E) None of these
Samara is an astronaut in deep space away from gravity. How could her urine move away from the kidneys and to the bladder in such a situation?
A) skeletal muscle movements B) peristalsis C) the Valsalva maneuver D) bladder suction pressure
Codominance occurs when
A) expression of two different alleles alternates from one generation to the next. B) both of the alleles in a heterozygote are equally expressed phenotypically in an individual. C) a heterozygote expresses an intermediate phenotype. D) offspring exhibit several different phenotypic expressions of a single trait.