基因连锁问题高中生物http://zhidao.baidu.com/question/585997473.html

基因工程 Ca离子处理大肠杆菌原理
改变细胞壁的通透性?细胞壁不是全通透的吗

Height is just one of the features your genes (基因) decide. In fact, because you have two parents, your genes provide you a height that usually lands somewhere between the height of each parent. If both your parents are tall, then most probably you will be tall, too. But if you have questions about how tall you’re going to be, ask your doctor if he or she can help you find them out. But genes don’t decide everything. For example, eating an unhealthy diet can keep you from growing to your full potential (潜力). Getting plenty of sleep and enough exercise will help you grow to the expected height. It’s natural that you’re wondering how fast you should grow. There’s no perfect or right answer. Generally speaking, kids grow about 6 cm a year between age 3 and the time when they start puberty . Your doctor will know how your growth has been going over the years. 2 cm here and 3 cm there make a little difference to the height you’re at now. How have you been growing up to this height？What other changes may your body be going through？ Don’t be amazed if you seem to have grown a lot in a very short time. Everyone has a growth spurt (高峰) during puberty. The age for starting puberty is about 10 for girls and about 11 for boys. But it can be earlier or later — between 7 and 13 for girls and 9 and 15 for boys. You’ll usually begin to notice that you’re growing faster about a year after your body starts to show the first changes of puberty. 小题1:If you want to know how tall you should grow, _______. A．you should have enough exercise B．you can ask doctors for help C．you should take some special medicine D．you can record your growth during puberty 小题2:The Chinese for the word “ puberty ” is _______. A．童年时期 B．婴幼儿时期 C．习惯养成期 D．生长发育期 小题3:This passage is mainly about ______. A．how the genes work in your body B．how your parents’ height influence you C．how you look like your parents D．how you grow to a certain height 小题4:After reading this passage, we can explain ______. A．how good it is to be a doctor B．how much sleep time we need C．why genes can’t decide everything D．what healthy diet is 小题5:Which is NOT mentioned in the passage？ A．Your height most probably depends on how tall your parents are. B．Girls’ age for starting puberty is usually earlier than that for boys’. C．The features showing the first changes of puberty between boys and girls are different. D．You may be amazed sometimes when you grow too fast.

选修3 基因工程.

基因重组包括基因自由组合?基因自由组合包括基因重组?
如题

基因银行回复
Dear GenBank Submitter:
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请问中文意思？在线等！！！

高中生物概念问题.基因重组属于细胞水平还是分子水平?
自然的基因重组和基因工程都属于基因重组,但似乎这两者不是同一水平.