Chapter 13 Reproduction in human beings
Reproduction has a huge change on muscular and cells. When they reproduce, they divide and replicate, making another clone or their former selves. That’s you grow. Male genetic changes are different from female because from males, they grow a beard, pubic hair, arm pit hair and Genetic mutations are also known as your DNA, or deoxyribonucleic acid. Your RNA is also known as ribonucleic acid, these two chemical structures are blueprints for your body. Cell division happens to a lot of living things, including plants. Cell division changes your body, causing it to grow. Genes also change during the process. Cell division happens all the time, it happens even when you don’t notice it because it’s involuntary.
This process also happens to plants as they grow and turn into trees. Trees are the fully grown stages of plants, meaning they will never grow and change. The leaves still fall and change, but the body doesn’t change. Unlike trees, humans don’t live forever, as they age, the body starts to weaken. Once it’s very weak, it will no longer be able to do what it can do before it started growing. Once a body is longer active, like for example, dead, the body and cells would start to decay. Once a body decays, it will no longer replicate and divide because it’s dead.
Chapter 14 How are traits transmitted from one generation to another?
We get traits from our parents Some kids have traits from their parents but are raised by other parents. Kids these days aren’t as perfect as their parents want them to be. Traits are receive when a newborn baby is brought to earth. The genetical structure of a face are different from another. For example, some people have black sin and others have white. The skin tone of the body is related to the skin tone of our ancestors or, people from another generation. Not all face are the same. Some have short hair while others have long hair. Your face is one of the most important parts in the world. It plays many different role, in fact, it’s what we use to communicate with other human beings. Your face is made of a foundation of a skull, cartilage, muscles, fat and skin. Like I said before, not all face are the same. In fact the reason why our faces look very different from each other is that so we won’t look very confused to see which one is real and which is not. For most people, the first ting you do when you run into someone is look at their eyes and eyebrows.
Eye look very different, they can look round or narrow, large or small, close together or wide apart. Eyebrow are also different, they can be close to the face or higher. The eyes, eyebrows, nose and lips are the most obvious feature of the face. They express when you’re happy, sad, exhausted, depressed, pissed, angry or frustrated. Some people who are in the same region in the world tend to share some very similar characteristics. For the most part, how dark your skin is depends on how much of a darker pigment called melanin your skin has. Many facial expressions like happy, sad, fear, surprised or angry are consistent and known all over the world. Facial expressions can also reveal whether or not someone is friendly, or can or can’t be trusted or what status they reveal in society. Whenever you get angry, try smiling for a few seconds, it just might cheer you up.
Chapter 15 The importance of DNA technology to society
DNA technology is very important to human society because it can reveal whether there’s a cure for disease or not. Medicine is the name when a certain substance of pill is used to reverse the effects of the terrible thing that’s happening to you. Most doctors today tend to have a lot of medicines to treat known sicknesses and viruses. That’s why a growing child is most likely to get vaccinated once he or she grows old enough. Some sicknesses cannot be cure ever. For example, diabetes. Diabetes are the result when human beings eat and consume a lot of sugar and don’t exercise daily. When this happens, diabetic people tend to inject themselves with some kind of serum to keep them alive and active throughout the day.
Some diseases can’t be cured and takes a while before it completely takes over the entire body. When this happens, the infected body part will need to be cut off to prevent from any more of the disease from taking over. Some disease take effect and take over the body immediately. Once this happens, doctors will have to find a way to get the medicine into the targets system before it kills the body. A lot of diseases are airborne and can infect another host without the host even noticing. So that’s why nurses and doctors wear special suits that prevent them from getting the infection.