百度试题 结果1 题目(c)Plants are not the only organisms that reproduce asexually.Name two other groups of organisms that also reproduce asexually.1 bacteria;12fungi;■■■I[2] 相关知识点: 试题来源: 解析 bacteria;fungi; 反馈 收藏
1. Bacteria are generally haploid organisms that reproduce asexually. A strain of Heliobacter pylori (The haploid bacterium that often causes ulcers) is found to have low levels of genetic variation at a locus encoding membrane proteins. If we assume thi...
Many organisms – including microbes, plants, and some reptiles – do reproduce asexually. But the vast majority of living things reproducesexually. ... Sexual reproduction allows for greater genetic innovation over time than clonal, improving the chances that an organism can solve the problems at ...
Meiosis is essential for sexual reproduction and thereforeoccurs in all eukaryotes(including single-celled organisms) that reproduce sexually. ... Meiosis does not occur in archaea or bacteria, which reproduce via asexual processes such as mitosis or binary fission. Do unicellular organisms undergo mito...
Plants That Reproduce Asexually Asexual reproduction among plants is called apomixis, which means without mixing. Biologists theorize that plants developed asexual reproduction as a way of colonizing a large area in harsh conditions in environments such as arctic and alpine. ...
关键是要理解during which it develops a protective covering,此处which指代pupal stage“蛹期”,可知果蝇在蛹期之前的幼虫期还没有保护层,换言之,果蝇在幼虫期需要形成保护层,才能标志其进入蛹期,故选D项。由第1段第3句可知,果蝇是在幼虫时期进食的,而A项说的是它们在蛹期进食,故错误,B项“在幼虫孵化出来几天...
AMortimerJMortimerRobinsonMortimerJMortimerEMortimerMMortimerWatkeysMortimerGMortimerLMortimerRidgwayMortimerBMJArchives of Disease in ChildhoodRobinson AJ , Watkeys JEM, Ridgway, GL. Sexually transmitted organisms in sexually abused children. Arch Dis Child 1998; 79 :356–8. [ PMC free article ] [ ...
The main conclusion is that, without cell senescence, the evolutionary advantages of sexual reproduction cannot be realized in unicellular organisms that reproduce both sexually and asexually. Also, cell senescence is found to be useful in the maintenance of sexual reproduction. This result suggests ...
APolak-VogelzangBMJSexually Transmitted InfectionsTjiam KH, van Heijst BY, Polak-Vogelzang AA, Rothbarth PH, van Joost T, Stolz E. Sexually communicable micro- organisms in human semen samples to be used for artificial insemination by donor. Genitourin Med 1987; 63: 116-8....
This is not true for bacteria, which reproduce asexually and inherit their DNA from only one parent.What about other fast-reproducing organisms?One might reply, “But mice have genomes about the size of the human genome and have much shorter generation times. Why do we not see evidence of ...