Sujet : Noise leads to the perceived increase in evolutionary rates over short time scales
De : rokimoto557 (at) *nospam* gmail.com (RonO)
Groupes : talk.originsDate : 05. Oct 2024, 16:38:53
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vdrmid$q8g5$1@dont-email.me>
User-Agent : Mozilla Thunderbird
second attempt to resend:
I sent this post yesterday, but it didn't show up.
https://journals.plos.org/ploscompbiol/article?id=10.1371/journal.pcbi.1012458This paper concludes that the perceived acceleration in the rate of evolution in relatively recent timescales or for short intensively studied periods of time are due to "noise" in the data. The noise seems to be the normal distribution of variation within any existing population and what was found as fossils of past species, and even errors of base calling for sequencing. I guess when you sample multiple individuals that died within a relatively short period of time that the then existing range of variation in the population gets haphazardly sampled in some temporal order and even randomizing the samples relative to time results in the same acceleration rate.
For DNA sequence you would be dealing with standing genetic variation within a population and the fact that the shorter the time period under study the fewer differences that you would observe between individuals, so sequencing errors might inflate differences for short periods of time more than for much longer periods of time, and the standing genetic variation found within the population might not be sampled enough to know where an individual fell in the distribution of variation that existed.
Probably not unexpected, but something that seems to have been missed.
Science Daily article:
https://www.sciencedaily.com/releases/2024/10/241003123239.htmRon Okimoto