All of the following are effects of crossing over of homologous chromosomes during prophase i of meiosis with the exception of
a) increased genetic variety.
b) increased the number of chromosomes in the offspring.
c) the appearance of new phenotypes in the offspring.
d) possible harmful mutations from cross-over errors.

B. increased number of chromosomes in the offspring.

Explanation:

Crossing over may cause chromosomes to lose or gain segments, but the overall number would not change.

the transfer of energy between two molecules spaced just nanometers apart plays a key role in many technologies, including photovoltaics, quantum information systems, lighting, and sensors, as well as in biophysics to measure nanometer distances and in photosynthesis. but an open question in this area is what effect, if any, the surrounding photonic environment has on this nanoscale energy transfer. by designing and performing a carefully controlled experiment to answer this question, scientists have settled the debate and found clues to improving the efficiency of many of the technologies that rely on this process.

explanation: