A mutation in the bicoid gene of Drosophila generates embryos with two posterior regions. What is the likely aspect of embryonic development that the bicoid gene probably controls?
Answer: anterior-posterior polarity
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A competing commercial effort to sequence the human genome was initiated by the company Celera in 1997 . How was their approach different from the Human Genome Project?
A. They generated overlapping clones from YAC and BAC libraries that were identified by hybridization and organized into long contiguous stretches called contigs. B. Libraries of individual chromosomes were generated and overlapping clones were isolated before sequencing. C. They used a whole-genome shotgun sequencing method that eliminates the step of assembling a physical map of the genome. D. They used sequence tagged sites (STS) and expression sequence tags (EST) to order contigs prior to sequencing. E. They sequenced the entire genome from one female donor.
People in developed nations use enormous quantities of resources. Extracting and using these resources does irreparable harm to the planet. What are some things that individuals can do to reduce their impact on the planet and live sustainably?
What will be an ideal response?
The tendency of water molecules to form hydrogen bonds is
A. evaporation. B. hydrolysis. C. cohesion. D. condensation. E. adhesion.
What is NOT a product of the light-independent reactions?
a. ADP b. NADP+ c. oxygen d. glucose e. free phosphates