Short Interfering RNAs Affect Gene Expression in Eukaryotes by

question 74

Multiple Choice

Short interfering RNAs affect gene expression in eukaryotes by

• A)blocking replication of certain genes.
• B)blocking transcription of certain genes.
• C)binding to mRNAs and preventing translation.
• D)binding to ribosomes, preventing the two subunits from joining.

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Definitions:

Epicotyl

The portion of a seedling stem above the cotyledons, which extends and develops into the first true leaves.

Embryo

An early stage of development in multicellular organisms following fertilization and before fetal stage, showing initial formation of organs and structures.

Cotyledon(s)

Cotyledons are the first leaves that appear from a germinating seed, playing a crucial role in photosynthesis and the storage of nutrients during the early stages of plant development.

Tissue Culture

Tissue culture is a technique of growing tissues or cells in an artificial medium outside their original body for the purposes of research or medical treatment.