The answer to this question may be the second one," Mitosis produces two genetically identical daughter cells but meiosis produces four genetically different daughter cells."
Do you have the answer options? Then I can help you out.
You didn't put any answers, but probably environmental groups.
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The simulations were consistent with actual DNA data obtained from a global public HIV database, developed and maintained by Los Alamos. The archive has more than 840,000 published HIV sequences for scientific research.
"We looked for special genetic patterns that we had seen in the simulations, and we can confirm that these patterns also hold for real data covering the entire epidemic," said Thomas Leitner, a computational biologist at Los Alamos and lead author of the study.
HIV is particularly interesting to study in this manner, Leitner noted, as the virus mutates rapidly and constantly within each infected individual. The changing "genetic signatures" of its code provide a path that researchers can follow in determining the origin and time frame of an infection, and the computer simulations are now proven to be successful in tracking and predicting the virus's movements through populations.
The rapid mutational capability of the virus is useful for the epidemiological sleuthing, but also is one of the features that makes it so difficult to tackle with a vaccine.
Leitner and Ethan Romero-Severson, the study's co-author and a Los Alamos theoretical biologist, used phylogenetic methods, examining evolutionary relationships in the virus's genetic code to evaluate how HIV is transmitted. They found that certain phylogenetic "family tree" patterns correlated to the DNA data from 955 pairs of people, in which the transmitter and recipient of the virus were known.
