Asexual reproduction in ascomycetes takes place by means of
A. ascogonia.
B. ascospores.
C. conidia.
D. motile gametes.
E. zygospores.
C. conidia.
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What type of covalent bond between amino acid side chains (R-groups) functions in maintaining a polypeptide's specific three-dimensional shape?
A) ionic bond B) hydrophobic interaction C) van der Waals interaction D) disulfide bond E) hydrogen bond
Eukaryotic cells regulate the expression of multiple genes by having ____
a. individual activators for individual genes b. a few activators that can interact with small subsets of genes c. activators that serve as catalysts for further activator protein synthesis d. a few activators that work in different combinations to activate different genes
e. a single activator that undergoes modifications to enable interaction with different promotersSome salamander species retain gills and other larval characteristics throughout adult life. This is an example of
A. phenotypic integration B. neoteny C. allometry D. heterozygosity E. canalization
The earliest known flowering plants date to the
A) Cambrian (early Paleozoic era). B) Triassic (early Mesozoic era). C) Cretaceous (late Mesozoic era). D) Tertiary (early Cenozoic era).