What is illustrated by the amino acid sequence of the p53 protein in Figure 22.13?
A. greater sequence similarity within closely related groups.
B. no significant patterns of sequence similarity.
C. greater sequence similarity between distantly related groups.
D. the gene for p53 protein originated in Homo sapiens.
Answer: A
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What is the predominant hypothesis for why animals only appeared in the fossil record about 3 billion years after life originated?
A. There were animals 3 billion years ago; they just weren't fossilized. B. Animals are warm-blooded; the ocean was too cold for animals to evolve 3 billion years ago. C. Animals have higher metabolisms, and animal diversification and evolution didn't really happen until there was sufficient oxygen in the atmosphere. D. Animals are heterotrophic and couldn't evolve until there were enough photosynthetic organisms on Earth to support being eaten by animals.
A benign tumor is usually not life-threatening
Indicate whether the statement is true or false.
Currently the two main vectors for delivery of therapeutic genes for human gene therapy are
A) AAV and retroviruses. B) AAV and Agrobacterium. C) Retroviruses and Agrobacterium. D) AAV and P elements.
Your relatively undiverse tongue microbiome is shaped primarily by environmental factors like temperature and osmotic stress. If you transplanted microbes from your forearm onto your tongue and then re-sampled your tongue 8 hrs later, what would you expect to find?
What will be an ideal response?