The genes encoding rRNA are examples of ________ of genes.
Fill in the blank(s) with the appropriate word(s).
tandem clusters
The genes encoding rRNA are examples of tandem clusters of gene.
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Malpighian tubules are the excretory organs found in
A. earthworms. B. flatworms. C. jellyfish. D. insects. E. vertebrates.
How do the protein fibers in the matrix ground substance compare between loose and fibrous connective tissues?
A) In loose connective tissues, the protein fibers are loosely woven, but in fibrous connective tissues, the fibers are densely packed. B) In fibrous connective tissues, the protein fibers are loosely woven, but in loose connective tissues, the fibers are densely packed. C) The protein fibers are dark red in fibrous connective tissue but are white in loose connective tissues. D) The protein fibers are white in fibrous connective tissue but are dark red in loose connective tissues.
The phylogenetic species concept (PSC) declares that a group is a species if it
A. looks different than other species. B. is allopatric. C. is reproductively isolated from other species. D. has no synapomorphies. E. has evolved one or more of its own derived characters.
Human chromosome pairs XX and XY are classified as ____
a. centrosomes b. somatosomes c. sex chromosomes d. autosomes e. corposomes