| Many perennial plants combine sexual reproduction through seeds with reproduction through vegetative propagation. |
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| Grasses, rushes, and sedges all produce flowers that must be pollinated for sexual reproduction to occur. |
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| Recent research has made it abundantly clear that females are not passive participants in sexual reproduction. |
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| In sexual reproduction, spermatocytes develop from the transformation of choanocytes, and oocytes arise from archeocytes. |
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| When I speak of sexual reproduction in this essay, I mean anisogamous amphimixis. |
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| Biological differentiation into male and female makes sexual reproduction possible. |
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| Most animal species that reproduce parthenogenetically also display a phase of sexual behaviour and sexual reproduction. |
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| Both species reproduce by cyclical parthenogenesis, in which phases of asexual reproduction are intermitted by sexual reproduction. |
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| Essentially, type I schizonts are involved in asexual reproduction, whereas type II schizonts are involved in sexual reproduction. |
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| Some make their hosts parthenogenetic, rendering the need for sexual reproduction irrelevant. |
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| In sexual reproduction a diploid somatic cell, the megaspore mother cell, undergoes meiosis to produce four reduced megaspores. |
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| Reproductive modes include sexual reproduction and parthenogenesis, but much remains to be known about development. |
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| In most ants, females are typically produced by sexual reproduction, while males develop from unfertilized eggs. |
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| But then they argue that genetic engineering and sexual reproduction are essentially the same. |
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| He ranged over many areas of animal and plant physiology, with special interests in the transport of nutrients and in sexual reproduction. |
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| Meiosis is the process by which diploid organisms produce haploid gametes capable of sexual reproduction. |
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| A progeny animal is one derived from sexual reproduction that has at least one cloned animal as a parent. |
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| Going back to the 19th century, scientists have proposed that sexual reproduction makes natural selection more effective because it increases genetic variation. |
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| The free-swimming tadpoles produced by sexual reproduction live only a few days, during which time they can be spread by tidal and storm currents to form new colonies. |
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| Flowering phenology is one of the most important characteristics in the life history of plants because it strongly determines fitness through sexual reproduction. |
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| Apple scab has two different life stages, a sexual reproduction stage and an asexual stage. |
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| On the contrary, sexual reproduction produces individuals who are all genetically different. |
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| Although asexual reproduction is common in seed plants, sexual reproduction is the major method of reproduction. |
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| The organisation also found chemicals such as phthalates which interfere with sexual reproduction and chlorinated dioxins that promote cancer. |
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| Nevertheless, we are also animals, and as animals we perpetuate our species by sexual reproduction. |
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| The formation of germ cells required for sexual reproduction is a much more complicated process than the one leading to asexual reproduction. |
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| Presently there is no evidence of an increased health risk if sexual reproduction is used for obtaining progeny. |
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| Importantly, to date it appears that these clone-associated phenotypes are not transmitted to offspring following sexual reproduction. |
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| Furcellaria lumbricalis can become dominant in the same environment recruiting by both vegetative and sexual reproduction. |
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| In parthenogenetic populations, traits historically involved in sexual reproduction are no longer under selection and potentially subject to such reduction. |
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| In parthenogenetically reproducing populations, traits involved in sexual reproduction are no longer under selection and thus potentially subject to vestigialization. |
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| This genetic diversity is ensured by sexual reproduction. |
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| Despite their utility in research, litters produced by polyembryony lack the advantages conferred by either asexual or sexual reproduction. |
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| In normal sexual reproduction, whether performed by separate sexes or hermaphroditically, the two functions are generally combined in a pair. |
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| Therefore, it is relevant to point out that natural selection has favoured the development of sexual reproduction over and above that of asexual reproduction. |
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| Deleterious mutations and the evolution of sexual reproduction. |
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| Although larvae are the result of sexual reproduction, corals also reproduce clonally. |
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| Asexual reproduction makes more sense mathematically, which led sexual reproduction to be a paradox. |
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| This full cycle involves migration from the roots to the leaves and back to the roots, and also an alternation of parthenogenetic and sexual reproduction. |
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| One topic to be addressed when covering sexual reproduction in plants is how plants avoid self-fertilization. |
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| Pollination is the transfer of pollen grains from the anthers to the stigmas to start the process of sexual reproduction. |
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| Also further on, the importance of sexual reproduction in human procreation is underlined, where one finds that: Every human being is always to be accepted as a gift and blessing of God. |
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| That results from a mixing of genes during the sexual reproduction. |
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| As any parent knows, sexual reproduction is unpredictable. |
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| It was noted that as rotifers age, they stop sexual reproduction, locomotion slows down, and feeding and reaction times become sluggish until the animal dies in about 10 days. |
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| Given the importance of sexual reproduction to the survival of a species, why do human SRY genes function so close to the boundary of infertility? |
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| The theory that sexual reproduction is healthier in the long run has been held by members of the scientific community but has not been proven until now. |
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| All fungi for which sexual reproduction is unknown are assigned to the form class Deuteromycota until such reproduction is discovered in that species. |
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