Some are fairly recent reproductions, but the Blacks are ready to dig deep into their pockets for the right vintage piece: the 1946 Eames molded plywood chair in the corner cost about $4,000.
Some of these people, like Mr. Black the copper trader, may have had longstanding disagreements with the auction houses; last year, Sotheby's admitted that a pair of antique chairs for which Mr. Black paid about $2.7 million were, in fact, recent reproductions.
Conversely, a variety that has not accumulated mutations must have been created recently by sexual reproduction and can thus be considered as a "recent" variety.
China's recent history of controlling reproduction provides the clearest example of where such programs can lead.
It may well be that certain recent findings about diminished reproduction in birds can also be related to interference with biological oxidation, and a consequent depletion of ATP.
Dan Fischer makes exacting graphite drawings of recent art history; his reproduction here of one of Yves Klein's "Anthropometries"—in which the French artist used nude models as human paintbrushes involves at least five shades of black.
Recent studies of sexual reproduction in the zygomycete Phycomyces blakesleeanus revealed that the mating system of this species is regulated by divergent alleles of a single gene: SexM and SexP [16].
Comparative studies of meiotic machinery (i) may indicate the presence of sexual reproduction in recent ancestors of organisms that are sexual or truly asexual (vs. just facultatively sexual), (ii) could indicate the absence of sex, (iii) will be useful for studies of the evolutionary advantages of sex, and (iv) can provide data that are valuable for ecological and epidemiological studies [44].
With the recent introduction of assisted reproduction techniques, the number seems to be increasing.
Then, the phylogenetic pattern we currently observe is simply a reflection of the relatively recent fixation of asexual reproduction in different lineages.
