How does DNA make every individual unique in their phenotypic appearence?
Answers
Answer:
Because every DNA is different from another
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Answer:
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 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 ar e certain sections that determine different physical features. These sections of DNA th at 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 fath er 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 fema le 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.