Examlex
The fossil record indicates that the immediate ancestors of modern marine animals diversified in the ____ period, right after the ____ extinction.
Transcription
The first step in gene expression, where a particular segment of DNA is copied into RNA by the enzyme RNA polymerase.
Posttranscription
Processes that occur to eukaryotic mRNA after it has been transcribed from DNA but before it is translated into protein, such as splicing, 5' capping, and polyadenylation.
Therapeutic Cloning
A technique for creating a clonal embryo using somatic cell nuclear transfer, primarily for the purpose of deriving stem cells to treat disease.
Pluripotent Stem
Cells capable of differentiating into almost any other cell type in the body, holding potential for regenerative medicine and developmental biology.
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