[科学美国人60秒] SSS 2015-11-13
时间：2019-01-20 作者：英语课 分类：2015年Scientific American(十一)月
英语课
H. Monkey, from their on south Africa rain forest they produce some of the loudest animal calls in the world.
They are about the size of a but they can sound as large as ahas long suspected that the monkeys’ play a role in attracting mates. the sounds are like other version of pick-up or that’s say, hey, check me out.
And now we know the quality of the depends on a bond near their throats, called the . The bigger the , the deeper the Males with deeper calls sound more attractive to females, which means that males with smaller have to come up with another strategies.
When you and when you look up the monkeys, you notice that the the testis are huge, and they white, they are really obvious.
University of She and her team found that H. monkeys faced a trade off.
As species can either have a really big bond, or it can be very but not both. That finding is on journal Those spices with bigger live in a single male groups, so it makes sense to invest researchers calledthat is, strategy of attracting female’s attention.
But when the spices grow and include more the best way to multiple males, passing on more genes 1 is to make more sperm 2, by building bigger testis. The research say the finding is the first evidence for evolutionary 3 trade-off between mating cause and sperm production. And they warn that while human women do tend to make prefer males with a deeper voice, we might advertise ourselves in many other ways as well. So to a enlarge
n.基因( gene的名词复数 )
- You have good genes from your parents, so you should live a long time. 你从父母那儿获得优良的基因，所以能够活得很长。 来自《简明英汉词典》
- Differences will help to reveal the functions of the genes. 它们间的差异将会帮助我们揭开基因多种功能。 来自英汉非文学 - 生命科学 - 生物技术的世纪
n.精子，精液
- Only one sperm fertilises an egg.只有一个精子使卵子受精。
- In human reproduction,one female egg is usually fertilized by one sperm.在人体生殖过程中，一个精子使一个卵子受精。
adj.进化的；演化的，演变的；[生]进化论的
- Life has its own evolutionary process.生命有其自身的进化过程。
- These are fascinating questions to be resolved by the evolutionary studies of plants.这些十分吸引人的问题将在研究植物进化过程中得以解决。