As stem cell research rapidly developed, it became a political and ethical issue. Describe how the ethical and political approach toward stem cell research has changed in the past decade
What will be an ideal response?
During the Bush administration, starting in 2001, embryonic stem cell research did not receive federal funding unless the research used previously existing stem cell lines. This limited the genetic diversity in stem cell lines. In 2009, the Obama administration allowed the use of new stem cell lines; however, the ethical standards became stricter. In 2010, a court ruling blocked federal funding for all embryonic stem cell research.
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The mediator protein complex in eukaryotes
A. facilitates interactions between RNA polymerase II and regulatory transcription factors. B. controls the rate at which RNA polymerase translates mRNA. C. completely enfolds RNA polymerase and the general transcription factors. D. is composed of a single protein.
How do researchers in the metagenomics sector operate?
A) They study Mendelian traits in children. B) They link diseases by shared gene expression. C) They detect mutations in the protein encoding part of an individual's genome by using powerful algorithms. D) They collect and sequence DNA, then consult databases of known genomes to imagine what the organisms to which the DNA belongs might be like.
Which of the following threats to biodiversity is attributed to increased mobility and trade?
a. habitat loss b. global climate change c. introduction of exotic species d. overharvesting
When studying ecosystems, ecologists sometimes choose to partition a part of a natural ecosystem to study. What is this called?
a. microcosm b. annexation c. mesocosm d. truncation