Which of the following statements about the 5?cap and mRNA processing is TRUE?
A. The addition of a 5? cap to mRNA occurs while the pre-mRNA is being made.
B. The 5' cap causes the mRNA to be rapidly degraded.
C. The 5' cap prevents the exit of mRNA from the nucleus.
D. The 5? cap is added to the pre-mRNA by splicesomes.
E. The 5? cap is a group of adenosine molecules.
A. The addition of a 5? cap to mRNA occurs while the pre-mRNA is being made.
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What is a typical characteristic of a quantitative trait?
A. No environmental influence on the trait B. Polygenic basis C. Discontinuous distribution of phenotypic trait. D. Usually the graph of trait versus frequency has two distinct peaks.
Principle(s) of the chromosome theory of inheritance include: Check all that apply.
_____ Genes are transmitted from parent to offspring via chromosomes. _____ Gametes contain either a maternal or paternal set of chromosomes. _____ Somatic cells contain a maternal and paternal set of chromosomes. _____ The paternal and maternal chromosomes assort randomly during meiosis. _____ Gametes are haploid and somatic cells are diploid.
In the process of transcription, incoming RNA nucleotides are in their triphosphates form
__________________ Indicate whether the statement is true or false.
The foundation of a marine food chain is
A) algae. B) Archaea. C) viruses. D) fungi. E) plants.