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Apr 27, 2017 · 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.
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.
Dominant traits are always expressed when the connected allele is dominant, even if only one copy of the dominant trait exists. Recessive traits are expressed only if both the connected alleles are recessive. If one of the alleles is dominant, then the associated characteristic is less likely to manifest.
Explain the basic principles of the theory of evolution by natural selection. Describe the differences between genotype and phenotype. Discuss how gene-environment interactions are critical for expression of physical and psychological characteristics.
Sep 24, 2015 · The Human Beast. Genetics. What Behaviors Do We Inherit Via Genes? Bravery is partly genetic but do we know why? Posted September 24, 2015 | Reviewed by Lybi Ma. A pervasive assumption in...
Dominant and recessive inheritance are useful concepts when it comes to predicting the probability of an individual inheriting certain phenotypes, especially genetic disorders. But the terms can be confusing when it comes to understanding how a gene specifies a trait.
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Inheritance Example. With respect to eye color, the allele for brown eyes (B) is dominant, and the allele for blue eyes (b) is recessive. If a person receives dominant alleles from both parents (BB) she will have brown eyes. If she receives a dominant allele from one parent and a recessive gene from the other (Bb) she will also have brown eyes.
