At the beginning of this century there was a general announcement regarding the sequencing of the human genome and the genomes of many other multicellular eukaryotes. Many people were surprised that the number of protein-coding sequences was much smaller
than they had expected. Which of the following could account for much of the DNA that is not coding for proteins?
A) most of the DNA serving as origins of DNA replication
B) DNA that consists of histone coding sequences
C) DNA that is translated directly without being transcribed
D) non-protein-coding DNA that is transcribed into several kinds of small RNAs with biological function
E) non-protein-coding DNA that serves as binding sites for reverse transcriptase
Answer: D
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The final step in a Sanger DNA sequencing reaction is to run the DNA fragments on a gel. What purpose does this serve?
A) It adds ddNTP to the end of each DNA fragment. B) It changes the length of the DNA fragments. C) It separates DNA fragments based on their charge. D) It separates DNA fragments generated during the sequencing reaction based on one-nucleotide differences in their size.
True or False: Learning is often based on imitation, including human learning
A. true B. false
What is heterogeneity?
a. intra-species genetic variation b. similarity between species across habitats c. number of ecological niches d. endemic inbreeding
Without _____, humans might have a tail
a. differentiation b. epigenetics c. cell migrations d. apoptosis e. the maternal gene effect