Joel is comparing two slides showing chromosomes in a sperm cell and a skin cell of a dog. he finds that the sperm cell has 39 chromosomes. how many chromosomes can he expect in the
skin cell?

78 chromosomes can be expected in the skin cell

Explanation:

The sex cells i.e sperm and ova cells are haploid in dogs. Being haploid means, the number of chromosomes is "n".

While a skin cell in dogs in diploid which means that the number of chromosomes is equal to twice the chromosomes in haploid cells i.e "2n"

Hence, if the total number of  chromosomes in haploid sex cell is "n" or "39"

Then the number of chromosomes in diploid skin cell is equal to "2n"

or

answer; i believe that the correct answer is (b) melosis; plz check first.good luck

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: