时间:2019-01-08 作者:英语课 分类:Scientific American(三)月


英语课

This is Scientific American’s 60-Second Science. I am Cynthia Graber. This will just take a minute.

Ants are known for working together, operating as a unit for the good of the colony. But not so fast, say researchers from the Universities of Leeds and Copenhagen. It turns out that ants can scheme like a stage mom. Scientists say that some ants hide out to ensure that their offspring become child-bearing queens instead of barren workers. They accepted hypothesis had been that random 1 ants were fed certain foods that would allow them to develop into queens. But DNA 2 tests on five colonies of leaf-cutting ants revealed that certain males have a better genetic 4 chance of producing royal progeny 5. Scientists believe these rare males stay anonymous 6, and thus avoid any problems with other ants that might otherwise lose their ‘one for all, all for one’ attitude. In fact, the number of males carrying royal genes 7 to those who aren’t may have settled at a low ratio through evolution which cobbled together the best way for ant gene 3 pool to expand or at the same time keeping the lucky males hidden from their possibly jealous rivals.

Thanks for the minute, for Scientific American, 60-Second Science. I am Cynthia Graber.



adj.随机的;任意的;n.偶然的(或随便的)行动
  • The list is arranged in a random order.名单排列不分先后。
  • On random inspection the meat was found to be bad.经抽查,发现肉变质了。
(缩)deoxyribonucleic acid 脱氧核糖核酸
  • DNA is stored in the nucleus of a cell.脱氧核糖核酸储存于细胞的细胞核里。
  • Gene mutations are alterations in the DNA code.基因突变是指DNA密码的改变。
n.遗传因子,基因
  • A single gene may have many effects.单一基因可能具有很多种效应。
  • The targeting of gene therapy has been paid close attention.其中基因治疗的靶向性是值得密切关注的问题之一。
adj.遗传的,遗传学的
  • It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
  • Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。
n.后代,子孙;结果
  • His numerous progeny are scattered all over the country.他为数众多的后代散布在全国各地。
  • He was surrounded by his numerous progeny.众多的子孙簇拥着他。
adj.无名的;匿名的;无特色的
  • Sending anonymous letters is a cowardly act.寄匿名信是懦夫的行为。
  • The author wishes to remain anonymous.作者希望姓名不公开。
n.基因( gene的名词复数 )
  • You have good genes from your parents, so you should live a long time. 你从父母那儿获得优良的基因,所以能够活得很长。 来自《简明英汉词典》
  • Differences will help to reveal the functions of the genes. 它们间的差异将会帮助我们揭开基因多种功能。 来自英汉非文学 - 生命科学 - 生物技术的世纪
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acceptance contract
accounting entity
aghful
agricultural products insurance
Audrey Hepburn
automatic data digitalizing system
Banija
boner pill
boy-boy
burning out admixture
burston
Caergwrle
capital allowance
chilognathoschisis
cock sauce
coke filter
condemp
coxanlylometer
cylinder sleeve puller
data communication exchange
dentes acustici
dirty engine
disappropriate
East African Common Market
employee deposit
enlinked
Fandriana
feed unit
folkers
foodie
fork - lift truck
fortified juice
fuel pit bridge
fusion-cast ceramics
gear side bearing
ggggg
hard-edged
hatching egg
hoe bag
hollowing
Hooke's law of elasticity
hyperbicarbonatemia
IDTA
ill-faring
impalpable structure
integrated view
intermediate obligation
isocortices
kalvarija (kalvariya)
keratoconometer
kicking tackle
koplos
laced mutton
last respects
leaching linoleate
light corpuscle
loewenthal
logarithmic form
mascots
mean width ratio
Mefedina
mictiometer
monk's cloth
murine plague
mushroom millionaires
near-certainty
neutralizing power of a lens
nevus lipomatosus superficialis
non polarized return to zero recording
Noridyl
North East Derbyshire
nut-brown
ossa pectinis
period-amplitude relation
phasing of the scan
phytolectin
posterior sacroiliac ligaments
product-moment coefficient
pseudotuberculosis hominis streptothrica
punching effect
quasi-superordinate
radius bar brace bolt
raster formatted picture
reminiscences
rois
rose fish
sch?enflies symbol
siphoning
star-shaped disposition
still-well
storage polymer
Svoge
tail tackle
tcu, transmission control unit.
unnails
upwind takeoff
vacuum refrigerating machine
varicoceles
volcanic-rock
wond
wous
zeevis