由句子According to the BBC, about two percent(百分之)of fish species(种类)can change their gender. That's 500 different species over the world. 据英国广播公司报道,大约百分之二的鱼类可以改变它们的性别。这是世界上500种不同的物种。2%是500,100%就是25,000。故选C。 (3)题详解: 细节理解题。
A. They change from female to maleB. They change from male to female.C. They change their genders freely.D. They usually change their babies' genders.()3. What's the key cause of fish gender changes?A. Their living habits.B. The temperature of the water.C. Their food.D. Their ...
In some species, females can reproduce parthenogenetically, males may become pregnant, and fish of both genders can change sex [3, 4]. This brief summary of the range of fish reproductive behaviors highlights why they offer so much as reproductive systems for analysis. Here we address the ...
In many fishes, sexuality is not only extremely plastic, but sex change is a usual and adaptive part of the life cycle. Sequential hermaphrodites begin life as one sex, changing sometime later to the other, and include species capable of protandrous (male-to-female), protogynous (female-...
Today, the god of rain not only has a presence in cult films such as Big Trouble in Little China, but also, like his earlier forms, in computer games as playable characters in both genders.Soul KeeperThe goddess who is only spoken of in the film is Meng Po, Lady Meng, the Guardian ...
Do amphibians change genders? Are amphibians the only vertebrates that undergo metamorphosis? When do amphibians develop gills? Are amphibians terrestrial animals? Are amphibians amniotes? Are tadpoles fish or amphibians? Are there any marine amphibians?
Despite what you might think, evolution rarely happens because something is good for a species. Instead, natural selection favours genetic variants that are good for the individuals that possess them. This leads to a much more complicated and messy world
We hypothesized that steroids within brain regions will be significantly different between stable groups and social status disruption groups, whereas waterborne steroids will not change. Overall, we took an integrative approach to study formation and maintenance of status in both males and females to ...
6 Cultures That Recognize More than Two Genders Distribution and abundance infishinGeneral features Written by Lynne R. Parenti Curator, Division of Fishes, National Museum of Natural History, Smithsonian Institution, Washington, D.C. Coauthor ofComparative Biogeographyand others. ...
and females and both genders combined, we included only the combined data in our meta-analysis. For case-control studies, the proportions (expressed as percentages) of con- trol subjects in the highest and non/lowest consumption categories were included. For cohort studies, the percen- tages of...