What is the fate of most new mutations?
What will be an ideal response?
Most are harmful and are lost via natural selection or genetic drift.
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If the rate of photosynthesis stops increasing, at what concentration of CO2 does it stop increasing?
a. between 100 and 300 ppm b. between 300 and 500 ppm c. between 500 and 700 ppm d. between 700 and 900 ppm
Alleles that are relatively new to a population and have been subject to positive natural selection are characterized by having ________
A) high frequency and high linkage disequilibrium B) high frequency and low linkage disequilibrium C) low frequency and high linkage disequilibrium D) low frequency and low linkage disequilibrium
You are on scene with a patient who is experiencing a severe bought of delirium tremens. What drug can you consider administering to assist this patient?
A) Cardizem B) Etomidate C) Narcan D) Valium
Which of the following is evidence that the transition to multicellularity did not require the origin of large numbers of novel genes?
a. The multicellular groups, animals and fungi, are unikonts. Some studies based on whether the genes for DHFR and TS are separate or fused indicate the unikonts were the first group of eukaryotes to diverge. b. The cadherin proteins of animals, which are involved in animal cell adherence to each other, contain only one novel domain not found in the cadherin proteins of unicellular choanoflagellates. c. Multicellularity evolved once and may have involved two stages: First, colonies arose as dividing cells remained attached by their shared cell walls; then differentiated cells arose as some cells became specialized for reproduction. d. Genomic studies indicate that multicellular Volvox has few novel genes compared with unicellular Chlamydomonas, and the cadherin proteins of animals, which are involved in animal cell adherence to each other, contain only one novel domain not found in the cadherin proteins of unicellular choanoflagellates. e. Genomic studies indicate that multicellular Volvox has few novel genes compared with unicellular Chlamydomonas.