我愿在黑暗里写字

我愿在黑暗里写字，我看不见那字，别人看不见我
我愿在黑暗里写字，写无法适从的心情，写以后的茫然

在偌大的世界里，我们总是找不到对的那个人
在不同的心情找不到人分享或分担
我只需要自我安慰

天空不太灰，眼泪淌过就好了
明天还是要坚强站起来，我要知足

我没有很多种心情，只是不太爱说话
偶尔喜欢沉默，别把我看得太深

有些事情不需要说得太白，会伤感情
所以我都不对事情深思追究
过了就忘了

有些人总是忘不了，怎么办
我还得被牵涉进去，免不了吗

那条小巷我走过了，不留痕迹
谁又知道我来过
而又何必知道我来过

我愿在黑暗里写字，他人不问，我也不说。

Genetics

Multiples genes –
three or more forms of a gene for a trait. / Any of a set of three or more alleles, or alternative states of a gene, only two of which can be present in a diploid. That is the sequence of the bases is slightly different in the genes located on the same place of the chromosome.

1. Chinchilla
2. Himalyan (Russian)
3. Albino
4. Skin Colour in Mice
5. Eye Colour in Drosophila
6. ABO blood group system

Polygene -
polygenic inheritance occurs when one characteristic is controlled by two or more genes (usually by many different genes) at different loci on different chromosomes. there is more than one gene involved and their may be multiple alleles of the multiple genes.

1. Human height
2. Kernal color in wheat (5 phenotypic classes)
3. Skin color

Linked genes –
genes on the same chromosome pair. The phenotype ratio for this cross is 3:1.

1. flower color and pollen shape experiment
2. fruit flies eyes color
3. hemophilia
4. red-green colorblindness

Lethal Gene –
a gene that leads to the death of an individual; these can be either dominant or recessive in nature

1. Recessive yellow mouse coat color.
2. Dominant lethal gene - Huntington's disease in humans.

Pleiotropy –
a single gene controls several distinct, and seemingly unrelated, phenotypic effects.

1. human disease PKU (phenylketonuria)
2. sickle-cell anemia

Epitasis –
type of gene interaction in which a gene at one locus masks or suppresses the effects of a gene at a different locus.

1. combs in chicken
2. Flower Color in Peas

Poison Ingestion-drink milk?

The other day, Sarah noted that on her laundry detergent, it said “In case of accidental ingestion, give a glass of water or milk, and contact a poison control center.” She thought it odd that they would want you to drink milk. The purpose of drinking at all was clear… to dilute the detergent. Even very dangerous poisons can be handled by your body if they are diluted enough. But what was so special about milk? We had two theories: one involved the basicity of milk, and the other involved the lactose sugar in milk.

I looked into it further, and my lactose guess was right. See, milk contains a sugar called lactose that the human body is unable to digest by itself. Lactose is a disaccharide (sugar made up of two units) consisting of one glucose unit and one galactose unit connected by a beta linkage. Lactose is digested in mammals (like humans) only with the help of an enzyme called lactase which cleaves the lactose in half… allowing the individual sugars to be absorbed by the body. The problem here is that there is a limited amount of lactase produced, and as humans age, many stop producing it altogether, making it harder and harder to digest the lactose sugars in milk. Eventually, many adults become lactose intolerant, meaning that they are unable to digest a significant amount of lactose. Interestingly, lactose intolerance varies widely by ethnicities. Those of African or Asian descent are almost always lactose intolerant. Europeans and some from India and the Middle-East retain lactase at a higher rate, likely due to a micro-evolutionary adaptation resulting from cultures in which lactose-containing foods are more common.

At any rate, even someone with the ability to digest lactose only has a limited amount of the lactase enzyme with which to process the sugar. Once all available enzymes are put to work breaking up lactose, additional incoming lactose molecules are put on a waiting list. While they’re waiting for a lactase spot to open up, your incredibly acidic gastric juices start doing a number on the milk that is just sitting in your stomach. The hydrochloric acid in your stomach turns the milk into hard-to-digest curds… sort of like what milk looks like when you leave it out for a few days. These curds end up coating your stomach and your intestines, and give you a case of indigestion. And if you’ve just swallowed a poison, indigestion is exactly what you want!

So there’s the answer… by drinking milk, you not only dilute the detergent (or other poison), you overwhelm the lactase enzymes, allowing your stomach’s hydrochloric acid to curdle the milk, which coats your stomach and intestines, slowing down the rate with which your body absorbs the poison.

So why not just induce vomiting? Well, you could choke, your stomach acid will erode your esophagus, the substance you swallowed could be harmful to your lungs or esophagus, and you’ll become severely dehydrated, which could actually be worse for you than the poison you ingested. The milk just “pauses” your digestion until you can seek proper medical care.

ADDITION:

What happens when you ingest milk and vitamins at the same time?
The answer is quite obvious, you won’t absorb those vitamins and nutrients at a rate in which would match adequate nutritional intake. Although milk may contain large amounts of vitamins and nutrients at a base level, these nutrients are not absorbed and thus end up in feces and urine.

However, inducing vomiting may be a better option then eating butter or drinking milk in some instances. The esophagus erosion is minimal compared to the potential stomach damage which could occur when corrosive poisons are present.

source:http://txfx.net/2005/10/20/in-case-of-poison-ingestion-drink-milk/

匿名的好友

独送昏暗不离的风 回忆里被爱
那股激动 天色好红
温柔好浓 在胸口浮现你的面容
一起活在这城市迷宫 提起你名字
心还跳动 却没重逢
只留下碰却又不敢碰的那种激动
也许我们当时年纪真的太小
从那 懵懵懂懂 走进各自天空
该怎么说让彼此选择 但思念还转动

不能握的手 从此匿名的朋友
其实我的执着依然执着
与你无关泪自行吸收
不能握的手 却比亲人更亲厚
但所有如果都没有如果
只有失去的温柔 最温柔

当 又一次美梦落空 回忆里被爱
那股激动 天色好红
温柔好浓 在胸口浮现你的面容
也 许我们当时年纪真的太小
从那懵懵懂懂走进各自天空
那是什么 让彼此选择 又不仅是尊重

不能握的手 从此匿名的朋友
其实我的执着 依然执着
却决心和 你不再联络
不能握的手 却比爱人更长久
当所有如果都没有如果
只有失去的拥有 最永久

by 杨丞琳

心中的遗憾

喜欢对着天空发呆
想着你的笑容出现在人海
你总是能让我开怀
忍耐我的坏
只是这一切将烟消云散

也许遇见你是个错
错在我们身处不同的时空
两颗心交会的时候
一分钟就足够
够 我一辈子想念很久

我会选择离开
微笑告别伤害
我知道你心中的那份遗憾
当你为她戴上幸福的头盖
我含泪祝福你有美的未来

想飞到千里外
期待一切重来
想洗去你对你的所有依赖
但谢谢你让我体会了真爱
我永远记得你心中的遗憾

by徐怀钰

Codominance & I.dominance

What is Incomplete Dominance?

Incomplete dominance is when the two alleles inherited from the parents are neither dominant nor recessive, but blend together to give a physical trait that is somewhere between the two.

What is Codominance?

Codominance is quite similar to incomplete dominance in that neither parental trait is dominant nor recessive. However, with codominance, the two traits both appear in the offspring, often showing up in different parts of the plant or animal.

Examples of Incomplete Dominance and Codominance in Plants

In plants, snapdragons exhibit incomplete dominance for color traits. When a red snapdragon and a white snapdragon are crossed (mated), the color of the offspring is neither white nor red. Instead, the resulting snapdragon will be pink.

With codominance in flowers, on the other hand, the resulting offspring between red and white parents would not be pink. Instead, they would be red with white spots or white with red spots, the result of both colors being codominant.

Example of Incomplete Dominance and Codominance in Humans

The most well-studied example of incomplete dominance in humans occurs in the genes for curly hair. Inheriting a gene for curly hair from one parent and a gene for straight hair from the other parent will give a hair texture that is a blend of the two, wavy hair.

A codominant genetic trait in humans occurs with blood types. There are three different alleles for blood type: A, B and O. While the O type is actually the absence of either A or B proteins in the blood, the A and B blood types are codominant. If someone inherits one A allele and one B allele, they will not have a blood type that is in between those two, but will instead have a blood type AB, which expresses both A and B proteins in the blood.

疯了

我们……
用·酒精·麻醉 孤单
用·伤口·掩盖 悲痛
用·狂欢·弥补 失去
用·文字·填写 遗憾……

-

是痛的·无需掩盖的
我知道你难过
不勉强的
该哭的时候就放肆地·痛快的

武装了·不甘示弱的
在你身后不再听见无理取闹
在你面前我已变成另一个人
你不熟悉的·而我已习惯

你说我变了·不再是我·所以你离开
你放弃了·不坚持了·我嘴角暗自上弯
苦涩·在身体里蔓延

不哭了·不难过了
我和自己对话·你带着无奈的眼神渐离渐远
留我一个·在这四角无窗的房间里
我看着你·远去·话说不出来

你最后的转身·我知道你不舍
我看着你·一直看着你·直到门关上的那一刻
那一刻·才闭上了双眼·我知道你不会再回来