Researchers have found that schizophrenia may be caused by multiple genes, each contributing equally to the behavioral phenotype. This is an example of _____
a. a polygenic additive model
b. epistasis
c. single gene, dominant trait
d. single gene, recessive trait
e. genome wide association
a
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You're describing a newly discovered protozoa that has long filamentous pseudopods. Which term best fits these pseudopods?
A. Filopods B. Lobopods C. Reticulopods D. Hyphopods
Most strains of gonococcus do not survive long outside the body
Indicate whether this statement is TRUE or FALSE.
Top-down factors that can control the population sizes of plants or animals include which of the following factors? Select all that apply.
_____ the density of herbivores _____ an extended period of drought _____ healthy populations of secondary carnivores _____ the presence of a fungal pathogen _____ nutrient-poor soil _____ levels of primary producers in the ocean
Cancer is best defined as
A) immune dysfunction. B) uncontrolled and abnormal cell division. C) viral malignancy. D) regulated differentiation of tissue. E) cellular deregulation.