Homologous chromosomes pair along their length during prophase I of meiosis. While two homologues are paired, genetic exchange may occur between them in a process called ________.
A. syngamy
B. synapsis
C. independent assortment
D. crossing over
D. crossing over
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If we examine the standard of living in Australia, Saudi Arabia, and India, we find that Australia has the highest standard of living, India has the lowest standard of living, and Saudi Arabia has an intermediate standard of living
Based on this information, which of following shows the correct listing of these countries from largest to smallest in terms of ecological footprint? A. Australia, Saudi Arabia, India B. Australia, India, Saudi Arabia C. India, Saudi Arabia, Australia D. Saudi Arabia, India, Australia E. India, Australia, Saudi Arabia
Which is not a typical food item for polychaetes?
a. live capture of fish b. live capture of invertebrates c. detritus d. suspension feeding on plankton
Bees feed on the nectar of flowering plants. Your classmate identifies this relationship as mutualism. Which of the following would support his claim?
a) none of the other choices b) the plant is unaffected by the bee c) the plant's ability to photosynthesize is diminished by the lack of nectar d) the bee transports pollen from one plant to the next, helping the plant reproduce
What happens if an insect is sprayed with a common insecticide that destroys the ability of acetylcholinesterase to recycle acetylcholine?
A. The lack of recycled acetylcholine brings cell metabolism to a halt. B. This prevents the synapse from restoring its ability to "reset" itself for the next impulse. C. The insect loses control of body functions as nerve impulses flow continuously. D. All of the above are correct. E. The synapse is prevented from restoring its ability to "reset" itself for the next impulse and the insect loses control of body functions as nerve impulses flow continuously.