Conserved indels are ________.
A. sequences in eukaryotic mRNAs that are removed by RNA splicing
B. a type of signature sequence particularly useful for phylogenetic analysis
C. sequences of protein coding genes that are found altered in related species due to their tendency to accumulate small deletions
D. a type of transposable sequence characteristic of a particular genus, and useful for taxonomic analysis
Answer: B
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Hybridomas are cells formed by the fusion of
a. B cells and melanomas. b. B cells and myelomas. c. T cells and melanomas. d. T cells and myelomas. e. B cells, T cells, and myelomas.
The climax community
a. is formed by species with the greatest range of environmental tolerance. b. is the most common community found in an area. c. changes over time. d. is well adapted to the climate and persists until the climate changes. e. is seasonal.
How would the movement of a nerve impulse be described?
A) the change in the magnetic field along a neuron B) the passage of ions through the membrane of a neuron C) the movement of tiny filaments inside a neuron D) the change in a neuron so that the inside becomes more negatively charged
Compared to small cells, large cells have more trouble
A) dividing. B) producing daughter cells. C) storing needed materials and waste products. D) moving needed materials in and waste products out.