True or False: Look at Figure 45.17 in the textbook. The F2 generation shows that the probability of having a sibling carrying the allele is 0.5
A. true
B. false
A
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How might absorption of organic compounds into clays assist in their aggregation and organization
into membrane-bound protocells?
a. Clays contain many minerals in extremely thin layers and readily repel ions, forcing multiple chemical interactions. b. Clays are highly structured, contain water, and store potential energy that could drive the chemical reactions forward. c. Clays lack water, forcing the concentration of the organic molecules and thus driving multiple interactions. d. Clays are extremely resistant to temperature changes and thus would insulate the organic compounds from temperature changes in the atmosphere. e. None of the above statements accurately explain clays’ possible roles in the formation of protocells.
A protein is synthesized on a ribosome within the rough endoplasmic reticulum. If the protein needs to be modified
and packaged before export from the cell, to which structure is it sent?
a. endosome b. lysosome c. Golgi body d. nucleus e. smooth endoplasmic reticulum
After dinosaurs became extinct, the number of mammal species increased greatly. What process applies to this example?
A) adaptive radiation B) endosymbiosis C) competition D) eukaryotic development
How is binary fission similar to mitosis with cytokinesis?
A. Both give rise to offspring that are genetically different from the parent. B. Both occur only in eukaryotes. C. Both are modes of sexual reproduction. D. Both occur only in prokaryotes. E. Both involve replication of DNA and separation of DNA equally into two daughter cells.