What are the advantages and disadvantages of both sexual and asexual reproduction? What will be an ideal response?
Concepts to Consider: Sexual--new genetic combinations may be advantageous in unstable
environments. It is more costly since gametes must meet and may produce individuals that are less
well adapted to changing environments. Asexual--offspring are genetically identical to the parent, so if
they are well adapted to the environment, all parents and offspring have an equally good chance of
survival. If they are not well adapted to the environment, then they may all die.
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Your research project involves characterizing the expression pattern of a nuclear pore protein. After using immunohistochemistry to fluorescently label the protein, you decide that you would like to capture the data as a 3-D image. Which microscope should you use?
A. confocal microscope B. scanning electron microscope C. phase-contrast microscope D. fluorescence microscope
__________ occurs at step C
a. Fertilization b. Mitosis c. Meiosis d. Zygote formation
What keeps the two populations separate?
A) temporal reproductive isolation B) lack of hybrid viability C) behavioral reproductive isolation D) habitat isolation
Many human activities influence the amount of CO2 in the atmosphere. Why? Select all that apply
A. Logging removes trees that would otherwise use CO2 during photosynthesis. B. Burning vegetation (to make way for croplands) releases CO2 into the atmosphere. C. Using fossil fuels to power vehicles releases CO2 into the atmosphere. D. There is no evidence that human activities contribute to atmospheric CO2 levels.