Crossing over occurs between chromatids of homologous chromosome pairs. Indicate whether the statement is true or false
T
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Why is the proteome larger than the genome?
A. Proteins may be modified by covalent addition of a variety of molecules B. Not all genes are expressed in all cells at the same time C. Each gene will produce multiple mRNAs which will produce multiple proteins so the ratio of the number of protein molecules the number of genes is greater than
Answer the following statements true (T) or false (F)
1. Overall brain size across mammals (e.g., an elephant vs. a bat) is a good predictor of behavioral complexity. 2. Cranial nerves are connected directly to the brain. 3. The somatic nervous system primarily regulates involuntary responses. 4. The sympathetic and parasympathetic divisions of the autonomic nervous system tend to have opposing actions on target organs. 5. A protein synthesis inhibitor would block learning in a human, but would have no effect in a simple invertebrate like Aplysia.
A type of horizontal gene transfer in prokaryotes in which a cell receives DNA from another cell through sex pili is:
a. Transformation b. Replication c. Transduction d. Conjugation e. Fixation
The discoverer of "homeotic mutations," who also resisted the growing "modern synthesis" model of evolution, was ________
A) St. George Mivart B) Ernst Mayr C) Julian Huxley D) David Wake E) William Bateson