@whiteandguiltycuh: DNA contains all the information needed to build your body. Did you know that your DNA determines things such as your eye color, hair color, height, and even the size of your nose? The DNA in your cells is responsible for these physical attributes as well as many others that you will soon see. It turns out that the DNA in your body came almost directly from your mother and father. If your DNA came from your parents and DNA determines your appearance, why do you not look exactly like your mother or father? The reason is that your DNA is a mixture of your mother's and father’s DNA. This is why some of your physical features may resemble your mother’s while some may resemble your father’s. Half of the DNA used to create your body came from your mother while the other half came from your father. Some of your features may look nothing like your mother’s or father’s, we will see why this occurs in the activity. Human DNA comes in 23 pairs of packages called chromosomes. These chromosomes are large bundles of tightly packed DNA. Your mother and father each donate 23 chromosomes, which pair up to give you your full set of 23 chromosomes. Within these 23 pairs of chromosomes, there are certain sections that determine different physical features. These sections of DNA that contain information that determine your physical features are called genes. Since you have two pairs of chromosomes, you also have two pairs of genes, one from your father and one from your mother. These pairs of genes then determine certain physical features or traits. The genes that you have in your body right now make up your genotype. This genotype then determines your physical appearance, which is called your phenotype. In this activity, you will be given two sets of chromosomes. One set is labeled male chromosomes while one is labeled female chromosomes. You will drop these chromosomes from above your head and they will randomly mix in different ways giving you a genotype. From this genotype, you will then have the detailed instructions to make a sketch of a human face. Before you begin, you should know a few more things about how genes determine your appearance. Genes can come in two different forms or alleles. A gene can be either dominant or recessive. In this activity, dominant forms of a ge ne appear in capital letters while recessive forms of a gene appear in lowercase letters. Since you get one gene from your mother and one from your father for each trait, you may have a combination of dominant and recessive genes for each trait. When both forms of a gene are the same (either both dominant or both recessive) you are said to be homozygous for that trait. If you have one dominant gene and one recessive gene, you are said to be heterozygous for that trait. One final thing before you begin the activity. As you will see in the activity, when you receive the dominant form of a gene whether homozygous or heterozygous, you will express the dominant form of the gene. You will only express the recessive form of the gene if you receive the recessive form from both of your parents, thus being homozygous for the recessive form. Finally, this information should provide you with the basics of how appearance is determined by DNA. #brookeshields #looksmaxing #bp #fypシ #palestine

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Sunday 14 June 2026 08:15:39 GMT