What is mrca?

Some articles on mrca:

Scientific Data Systems - Known Users
... Lansing) WS Atkins Engineering (Epsom) British Aerospace (Wharton) (Dual Sigma 5 - MRCA (Tornado) Flight Telemetry) Comshare (London) Cybernetics Research Consultants (Slough) Rank Xerox (D ... J.Sefel Watsons (Insurance) Redhill A AEE Boscombe Down (Sigma 5 - MRCA (Tornado) Flight Telemetry) RAE Bedford (Sigma 9 flight simulator) Cambridge university department of ...
Y-chromosomal Adam
... In human genetics, Y-chromosomal Adam (Y-MRCA) is the most recent common ancestor (MRCA) from whom all living people are descended patrilineally (tracing back only along the paternal lines of their family tree) ... Older studies estimated Y-MRCA as recent as 60,000 years ago ...
Mcra
... In genetics, the most recent common ancestor (MRCA) of any set of organisms is the most recent individual from which all organisms in the group are directly descended ... The MRCA of a set of individuals can sometimes be determined by referring to an established pedigree ... However, in general, it is impossible to identify the specific MRCA of a large set of individuals, but an estimate of the time at which the MRCA lived can often ...
Mcra - Time To MRCA Estimates - TMRCA of All Living Humans
... Estimating time to MRCA of all humans based on the common genealogical usage of the term 'ancestor' is much harder and less accurate compared to ... remote islands in the South Pacific, the human MRCA was generally assumed to have lived in the Upper Paleolithic period ... and computer simulations, some researchers have argued that the MRCA of all humans lived remarkably recently, between 2,000 and 4,000 years ago ...