Rice and its grain relatives, maize, barley, and wheat, diverged from a common ancestor 50 million years ago. However, the chromosomes of these plants demonstrate extensive conserved arrangements of segments. This phenomenon is called
A. linkage disequilibrium.
B. single nucleotide polymorphisms.
C. contig.
D. synteny.
E. expressed sequence equilibrium.
D. synteny.
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The answer set for this question shows a series of short amino acid sequences obtained from a protein. If you were faced with choosing one of these to design a probe for a particular gene, which would provide the simplest probe or probe set?
(To answer this question, consult the codon table shown in the figure above.) A) leucine-leucine-serine-leucine B) leucine-serine-proline-proline C) proline-methionine-proline-leucine D) tryptophan-methionine-tryptophan-tryptophan
In this representation of transcription, strand #
2 represents
a. the coding DNA strand. b. the transcript. c. the template for the coding DNA strand. d. the coded RNA strand. e. both the transcript and the coded RNA strand.
C14 is a radioactive isotope, and due to its predictable
__________ rate it is used to date organic fossils. Fill in the blank(s) with the appropriate word(s).
Genes for protein receptors for LH, FSH, and TSH
a. are found in sea anemones. b. have similar nucleotide sequences in sea anemones and vertebrates. c. produce structurally similar gene products in sea anemones and vertebrates. d. presumably arose millions of years ago in a common ancestor of sea anemones and vertebrates. e. include all of these.