What is the dominant feature?

The dominant feature is the genetic feature that manifests itself when only one copy of the gene is present, rewriting another inherited gene coding for another version of the property. On the other hand, the recessive property only occurs if the body inherits a copy of the gene from both parents. Otherwise, the recessive inactive remains and will take over the dominant feature. The idea of ​​recessive and dominant qualities was promoted by Gregor Mendel, who in the 19th century conducted research with peas to better understand the genetic heritage.

The reproduction process begins by generating eggs and sperm. These cells are haploid, which means they contain half of the genetic material needed to code the organism. When eggs and sperm are merged, they create a diploid cell with all the necessary genetic material and the cell begins to grow and divide and eventually turns into a child. This genetic material is divided into chromosomes, with individual traits determined genes at specific places on the chromosome known as alleles.

When someone inherits the dominant and recessive allele, the recessive gene essentially remains outside it, allowing the dominant gene to be taken over. For example, if a child inherits genes for brown and blue eyes, the blue gene remains sleeping and ensures that the child's eyes are brown. As a result, brown eyes are a dominant feature. Thanks to Gregor Mendel, many people use capital and lower letters to distinguish between dominant and recessive features such as this: B/B, for brown/blue eyes.

In some cases, people inherit two copies of the same alleles, which is homozygous for this particular feature. People can also be heterozygous, with two different alleles for a particular gene. When someone is homozygous for the property, this feature is manifested whether it is dominant or recessive because TZE is no other genetic material to compete with it. When someone is heterozygous for the property, the difference between the dominantAnd recessive features become more important because the dominant feature is the one that manifests itself.

In a simple example of the way the dominant features work, someone could have two parents who are heterozygous for brown and blue eyes. There is a 25% chance that the child will inherit the allele BB, causing it to be blue -round. There is a 50% chance that the child will inherit B from one parent and B from the other to give the child brown eyes, with the ability to pass blue eyes to your child. In the end, the child could inherit B from both parents, so the child homozygous for brown eyes.

Since there are more colors than brown and blue for the eyes, no surprise should be found that eye color is actually determined by genes on several alleles that interact with each other to create colors like green, gray and hazel except Brown and Blue.