Search results
Apr 27, 2017 · Dominant Trait Definition. A dominant trait is an inherited characteristic that appears in an offspring if it is contributed from a parent through a dominant allele. Traits, also known as phenotypes, may include features such as eye color, hair color, immunity or susceptibility to certain diseases and facial features such as dimples and freckles.
Dominant genes are capable of producing a certain trait or characteristic when present in the chromosome pair. Even if a recessive gene allele is also present, the dominant allele takes precedence and determines the observable trait in the organism. The expression of dominant genes can override the presence of a recessive allele. Significance ...
Dec 20, 2023 · Dominant genes have the ability to mask the effects of recessive genes, meaning that when a dominant gene is present, it will be expressed in the phenotype of the organism. In the animal kingdom, there are numerous examples of dominant genes that determine specific traits. One well-known example is the dominant black coat color gene in dogs.
An example of this can be found in the recessive gene disorder sickle cell disease. The gene that produces healthy, round-shaped red blood cells is dominant. The recessive gene causes an abnormality in the shape of red blood cells; they take on a sickle form, which can clog the veins and deprive vital organs of oxygen, increasing the risk of stroke.
In this example, we will call the gene for cleft chin “B,” and the gene for smooth chin “b.” Cleft chin is a dominant trait, which means that having the dominant allele either from one parent (Bb) or both parents (BB) will always result in the phenotype associated with the dominant allele.
In this example, we will call the gene for cleft chin “B,” and the gene for smooth chin “b.” Cleft chin is a dominant trait, which means that having the dominant allele either from one parent (Bb) or both parents (BB) will always result in the phenotype associated with the dominant allele.
People also ask
What are dominant genes?
What is a dominant gene phenotype?
What if one parent has a dominant trait?
How do dominant genes affect phenotypes?
What are some examples of dominant traits?
What does it mean if a gene is dominant or recessive?
Definition. In psychology, a gene is the fundamental unit of heredity that carries the instructions for traits and behaviors in individuals. Genes are made up of DNA and control the production of proteins, which impact how cells and the entire organism function. The expression of genes can be influenced by the environment, allowing for adaptive ...
