During single flower visits, males and workers caused similar levels of pollen deposition and seed production, yet female bees left fewer pollen grains in anthers to be transferred to other stigmas in the plant population. Overall, male bumble bees are common and capable pollinators of G. ...
Here we document a shift in observed sex ratio (OSR) of ground-nesting bees along an urbanization gradient, with the relative abundance of female bees declining as urbanization increases while the abundance of male ground-nesting bees remained unaffected by urbanization. Because provisioning female bee...
Female bees receive heterozygous CSD genes, whereas males receive only a single copy. That looks similar to the XO/ZO system, right? Well, here’s the twist. Unlike these systems, which receive autosomes from both parents, male honey bees andantsreceive chromosomes only from the female par...
Choosing between two good things can be tough. When animals must decide between feeding and mating, it can get even trickier. In a discovery that might ring true even for some humans, researchers have shown that male brains – at least in nematodes – will suppress the ability to locate foo...
They collect pollen and nectar (花蜜) from flowers and bring them back to the hive for all the bees to eat. The drones, also known as the male bees, are the fathers of the queen bee’s eggs. Drones don’t do anything else. The worker bees feed the drones. There are usually only ...
Females also spar less in female-dominated colonies than in male-dominated ones.1 When female spiders are dominant, spiders also are less hostile toward spiders from other colonies. The result is a more peaceful environment all around when there are more females.2 For the past two decades,...
A 解析:与上文的 All worker bees are female.相对,此处表示蜂群也有一些雄蜂。female与 male相对,故本题选A。B解析:句意:照看蜜蜂的人被叫作养蜂人。call意为“叫”。A解析:联系下文可知,许多蜜蜂消失了,可见这是一个大问题。故problem符合题意。C解析:承接上文可知,没人真正知道这是怎么回事,结合选项可知...
Another kind of bee is the drone(雄蜂).Drones are male bees,and their job is to fly with the queen bee and mate with her.After the queen mates,the worker bees drive the drones away.The drones then starve to death. The third kind of bee is the queen.Each hive need...
aYou never actually own a patek philippe.You merely look after it for the next generation. 您从未实际上拥有一patek philippe。您仅仅照看它为下一代。[translate] aDrones are male honeybees. 正在翻译,请等待...[translate]
G. American honey bees. . European wild bees.7.From the passage we know that___. . bumblebees are active all summer long . the first honey bees were from North America . male wild bees are the most hard-working . most plant species move their pollen on their own ...