Molecular homology can be compared by analyzing the
A. sequences of amino acids of various proteins in different species.
B. elemental makeup of different species.
C. positions of genes on the chromosomes of different species.
D. vestigial structures of different species.
E. protein structure during development.
A. sequences of amino acids of various proteins in different species.
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Regulatory proteins can identify specific sequences on the DNA double helix without unwinding the helix. This is accomplished by inserting
A. RNA promoters into either the major groove or the minor groove of the double helix where the edges of the nitrogen bases protrude. B. DNA-binding motifs into the minor groove of the double helix where the edges of the nitrogen bases protrude. C. DNA polymerase into the major groove of the double helix where the edges of the nitrogen bases protrude. D. RNA polymerase into the major groove of the double helix where the edges of the nitrogen bases protrude. E. DNA-binding motifs into the major groove of the double helix where the edges of the nitrogen bases protrude.
Arranging homologous pairs of chromosomes in order from longest to shortest is called:
A. a karyotype. B. chromosome painting. C. chromosome numbering. D. a nuclear genome. E. Both chromosome painting and chromosome numbering are correct.
________ is the name given to the layer of cell wall material shared between two adjacent plant cells.
Fill in the blank(s) with the appropriate word(s).
Cells in the central nervous system that are important for functions such as memory are the:
A) interneurons. B) motor neurons. C) glial cells. D) sensory neurons.