Search results
27 kwi 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.
Kids learn about hereditary patterns in the science of biology including dominant and recessive genes, alleles, the Punnet square, examples, and interesting facts.
A dominant trait is a genetic characteristic that appears in an offspring if at least one parent contributes it. In genetics, dominant traits are typically represented by uppercase letters. For example, if "A" represents a dominant trait and "a" represents a recessive trait, the combinations "AA" and "Aa" would both express the dominant trait.
2 mar 2024 · Dominant traits are characteristics that are expressed more prominently in an individual’s genetic makeup. These traits are the result of dominant genes that overpower recessive genes, determining the outward appearance or behavior of an organism.
Some genes are dominant, or stronger than others. A child may get a gene for cheek dimples from the father and a gene for no cheek dimples from the mother. Because the cheek-dimple gene is dominant, it takes over the job of giving cheek dimples to the child.
Sex-linked traits may be recessive or dominant. Recessive sex-linked traits occur more frequently in men because males have no allele on the Y chromosome to counteract the effects of a recessive allele on the X chromosome. The genotype of these males is called hemizygous.
It’s easier to start with pure, homozygous traits (both alleles for each gene are identical): Mom is: Dominant freckled face, Recessive small eyes, Recessive blue eyes, and Recessive straight hair. Dad is: Recessive no freckles, Dominant big eyes, Dominant hazel eyes, and Dominant kinky hair.
