| 单词 | evolutionary clock |
| 释义 | > as lemmasevolutionary clock evolutionary clock n. the process of biological evolution, or the rate at which evolutionary change is inferred to have proceeded, likened to the passage of time measured by a clock; spec. = molecular clock n. 2; also in extended use. ΘΚΠ the world > time > instruments for measuring time > clock > [noun] > other types of clock watch-clock1592 German clock1598 quarter clocka1631 wheel-clock1671 table clocka1684 month clock1712 astronomical clock1719 musical clock1721 repeater1725 Tompion1727 pulling clock1733 regulator1735 eight-day clock1741 regulator clock1750 French clock1757 repetition clock1765 day clock1766 striker1778 chiming clock1789 cuckoo-clock1789 night clock1823 telltale1827 carriage clock1828 fly-clock1830 steeple clock1830 telltale clock1832 skeleton clock1842 telegraph clock1842 star clock1850 weight-clock1850 prison clock1853 crystal clock1854 pillar scroll top clock1860 sheep's-head clock1872 presentation clock1875 pillar clock1880 stop-clock1881 Waterbury1882 calendar-clock1884 ting-tang clock1884 birdcage clock1886 sheep's head1887 perpetual calendar1892 bracket clock1894 Act of Parliament clock1899 cartel clock1899 banjo-clock1903 master clock1904 lantern clock1913 time clock1919 evolutionary clock1922 lancet clock1922 atomic clock1927 quartz clock1934 clock radio1946 real-time clock1953 organ clock1956 molecular clock1974 travelling clock2014 1922 J. C. Willis Age & Area xx. 205 As yet we are without any evidence as to what is the aim of nature, though..it seems evident that the evolutionary clock was wound up to run on a very definite plan. 1965 E. Zuckerkandl & L. Pauling in V. Bryson & H. J. Vogel Evolving Genes & Proteins 148 The changes that occur at a fairly regular over-all rate would be expected to be those that change the functional properties of the molecule relatively little... There may thus exist a molecular evolutionary clock. 1992 Cambr. Encycl. Human Evol. (1994) viii. v. 313/2 (caption) Patterns of relationship..based on information from DNA-DNA hybridisation, assuming that the DNA evolutionary clock ticked at about the same rate along each branch. 2004 B. S. Allen et al. in D. H. Jonassen Handbk. Res. Educ. Communications & Technol. (ed. 2) x. 218 The human evolutionary clock may have slowed..because we accommodate some ‘natural selection pressure’ technically and socially rather than biologically. < as lemmas |
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