In humans, the correlation between recombination frequency and length of dna sequence is, on average, 1 million bp per 1% re during the process of mapping the huntington disease gene (hd), it was found that hd was linked to a dna marker called g8with an rf of 596. surprisingly, when the hd gene was finally identified, its physical distance from g8was found to be about 500,000 bp, instead of the expected 5 million bp. how can this observation be explained?

Imagine ? person stepping on a pin and pulling his or her foot way look at the réfléchir arc of the scenarios below

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.