| 单词 | unfertilised |
| 例句 | By contrast, the drones develop from unfertilised eggs. Proteins roll the dice to determine bee sex 2023-10-04T04:00:00Z She has also kept three as unfertilised eggs, which have a 10% chance. Egg freezing rises as more women look to preserve fertility 2023-06-19T04:00:00Z Three of Vicky's eggs were turned into embryos, which she was told have a 20% chance of resulting in a baby, and she decided to keep three as unfertilised eggs, which have a 10% chance. Vicky Pattison: 'Sharing my egg freezing journey nearly broke me' 2023-06-19T04:00:00Z Baby lizards, snakes, sharks and birds, including the California condor, have all been documented hatching from unfertilised eggs. Crocodile’s ‘Virgin Birth’ Is a First for Science’s History Books 2023-06-09T04:00:00Z Some birds, such as hens, lay eggs even when not fertilised, though unfertilised eggs do not produce offspring. Fundamentals of Biology 2015-01-01T00:00:00Z Josephine, on the left, is clearly rather plump because she is full of a clutch of unfertilised eggs. The secret world of pygmy seahorses, where males give birth – photo essay 2020-11-19T05:00:00Z Those strong-armed into a relationship yielded more eggs that went unfertilised or got lost, and more deaths of hatched chicks. Speed-dating birds 2015-09-17T04:00:00Z In order for a Dolly-like clone to be born it is necessary to have females of a closely related species to provide unfertilised eggs, and, if cloned embryos are produced, to carry the pregnancies. Produce Woolly Mammoth Stem Cells, Says Creator of Dolly the Sheep 2013-08-01T19:45:00.567Z Unfertilised eggs are often produced by females – you may have had unfertilised eggs for breakfast this morning from a domestic hen – and if unfertilised eggs aren’t eaten, they eventually perish. Crocodile’s ‘Virgin Birth’ Is a First for Science’s History Books 2023-06-09T04:00:00Z “These females are using the nutrients from males to develop her unfertilised eggs,” says Wegener. Australian squids eat sperm for better bodies and babies 2013-06-05T00:15:02.003Z The tadpoles then feed on deliberately unfertilised eggs laid by the female. Rescue frogs in breeding success 2012-07-28T23:30:38Z Hence the so unfertilised state in which the mutual relations are left! The Letters of Henry James, Vol. II 2011-11-18T03:00:26.730Z Thus, among bees, unfertilised eggs give rise to drones, fertilised eggs to females. The Biological Problem of To-day Preformation Or Epigenesis? The Basis of a Theory of Organic Development 2011-08-29T02:01:04.170Z Virgin births, known as parthenogenesis, happen when an unfertilised egg develops into an embryo. Crocodile’s ‘Virgin Birth’ Is a First for Science’s History Books 2023-06-09T04:00:00Z The research team in Hong Kong tested whether SLeX was the key binding sugar using the outer coats of unfertilised and non-living human eggs, obtained by informed consent from in vitro-fertilisation patients. Sugar Molecule Helps Egg Capture Sperm 2011-08-22T13:59:00Z In some cases, though, the unfertilised ovum itself is believed to be affected. The inheritance of obesity: Thanks, Dad 2011-01-06T10:47:49Z Her mind, insatiate as a fallow, unfertilised field, absorbed whatever was thrown upon it. The Song of Songs 2011-01-01T03:00:25.907Z The Ranger never paused from the time he set out until he found himself under a portion of the long brick-wall that still divides the richly ornamented park from the arid and unfertilised heath. The Buccaneer A Tale In these cases the hatching of unfertilised eggs is not known to occur in a state of nature, although it probably occurs occasionally. More Science From an Easy Chair The relation between the unfertilised egg and the blastoderm which arises from it is not made altogether clear by Schwann. Form and Function A Contribution to the History of Animal Morphology In the ants, bees, and wasps the unfertilised ovum always develops into a male, the fertilised into a female. Hormones and Heredity The fertilised cell is quite another thing from the unfertilised cell. The Evolution of Man — Volume 1 Moreover the caterpillars raised from these unfertilised eggs "possessed far less vitality" than those from fertilised eggs. The Variation of Animals and Plants under Domestication — Volume 2 It is, for instance, well known that the majority of marine animals lay their unfertilised eggs in the ocean and that the males shed their sperm also into the sea-water. Darwin and Modern Science In all cases in which the unfertilised egg has been treated in such a way as to cause it to form a membrane it begins to develop. Darwin and Modern Science For the eggs of certain animals membrane-formation is all that is required to induce a complete development of the unfertilised egg, e.g. in the starfish and certain annelids. Darwin and Modern Science He discovered that male bees come from the unfertilised, and female bees only from the fertilised, eggs. The Evolution of Man — Volume 1 If we put unfertilised eggs of a sea-urchin into sea-water which contains a trace of saponin we notice that, after a few minutes, all the eggs form the typical membrane of fertilisation. Darwin and Modern Science The writer found that we can produce this membrane in the unfertilised egg by certain acids, especially the monobasic acids of the fatty series, e.g. formic, acetic, propionic, butyric, etc. Darwin and Modern Science The experiments were made on the fertilised and unfertilised eggs of the sea-urchin, and yielded the result that for the lowering of temperature by 1 deg C. the duration of life was about doubled. Darwin and Modern Science |
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