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If expression of a trait requires 2 copies of a gene. A dominant allele might be recessive in the presence of another dominant allele. If expression of a trait requires only one copy of a gene (one allele), that trait is considered dominant. If both parents are unaffected and they each pass on a defective gene causing their child to be affected, then the genetic disorder is autosomal recessive. In order to understand the concept of dominant and recessive traits, it is. A dominant gene means that a single allele can control whether the disease develops. The trait that is present at the gene level but is masked and does not show itself in the organism is called the recessive trait. The trait that first appears or is visibly expressed in the organism is called the dominant trait. Dominance is a relative trait for alleles. Dominant and recessive traits exist when a trait has two different forms at the gene level. Either way, the resultant prototype is completely different from the other. Timely and inspiring teaching ideas that you can apply in your classroom Some traits depend on the presence of certain pigments or enzymes while others rely on the lack of such pigments. Manage saved and uploaded resources and foldersД«rowse educational resources by subject and topic Search reviewed educational resources by keyword, subject, grade, type, and more

Recessive vs dominant traits