BIOL 112 Study Guide - Phenylalanine, Agarose Gel Electrophoresis, Cystic Fibrosis
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Which of the following best describes the Activator (Ac) and Dissociation (Ds) transposable elements in maize (corn)?
A) | Ac and Ds are class II, RNA retrotransposons | |
B) | AC and Ds are IS (Insertion Sequences) type transposable elements | |
C) | Ac and Ds are class I, DNA transposons | |
D) | Neither Ac nor Ds contain functional transposase genes. | |
E) | Ac elements cannot transpose unless a Ds element is present |
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_______________ are transposable elements that move within the genome by being copied and reinserted as DNA sequences, avoiding the need for reverse transcription"
A. | Retrotransposons | |
B | Retrovirus-like elements | |
C | DNA transposons | |
D | Satellite DNAs | |
E | Long interspersed elements (LINEs) | |
F.Short interspersed elements (SINEs) |
The large differences observed in genomic size among eukaryotes correspond primarily to differences in
A | the amount of protein-coding genes | |
B | the amount of noncoding DNA | |
C | the biological complexity of the organisms at hand | |
D | the length of the telomeres | |
E the size of the centromere |
The study of lncRNAs has revealed
A | that protein-coding genes are distributed homogeneously throughout the genome | |
B | that splicing regulates more genes than initially expected | |
C | that miRNAs are mostly limited to intronic sequences | |
D | that only a relatively small fraction of the human genome is ever transcribed | |
E | the existence of genomic regions coding exclusively for rRNA and tRNA | |
F | that extensive regions of our genome are in fact actively transcribed even though they do not contain protein-coding genes |