One dominant allele is enough for a dominant trait to be observed in the offspring. Even if it occurs with a recessive allele, the dominant allele will still determine the expression of a specific trait. On the other hand, a recessive allele is not expressed when it is paired with a domin...
What does it mean that an allele is "dominant" as opposed to being "recessive?" What are some examples of alleles? How are dominant and recessive traits (alleles) defined? If you have an organism in which the A allele is dominant to ...
(and the trait of tallness) is said to be completely dominant. If theTtindividual is shorter than theTTbut still taller than thettindividual,Tis said to be partially orincompletely dominant; i.e., it has a greater influence thantbut does not completely mask the presence oft, which is ...
six possible genotypes can result from mating. However, only four phenotypes (blood groups) occur, A, B, AB, and O. Two inheritance patterns can be seen in blood groups. Both A and B alleles are dominant when they are found with the O allele. However, If a person...
Dominant Allele Definition and Dominant Traits Traits are observable characteristics that are produced as a result of an individual's genotype. Alleles are the different versions of a gene, or units of heredity found at a specific location on a specific chromosome. Dominant alleles will be expressed...
In complete dominance, a heterozygous individual with a dominant allele and a recessive allele for a particular gene shows the phenotypic expression of the dominant allele. In contrast, the expression of the recessive one is masked. A cross made between the pea plants’ traits: round and wrinkled...
Allele, any one of two or more genes that may occur alternatively at a given site (locus) on a chromosome. Alleles may occur in pairs, or there may be multiple alleles affecting the expression (phenotype) of a particular trait. Learn more about alleles i
The law (or the principle) of dominance states that the presence of a dominant allele will always mask the presence of a recessive allele. Complete dominance is a form of dominance in the heterozygous condition wherein the allele that is regarded as dominant completely masks the effect of the...
If one parent has two copies of allele “A” (which would be dominant) and the other parent has two copies of allele “a” (which would be recessive), then the child will inherit an “Aa” genotype and still display the dominant phenotype. ...
The affected males pass the condition on to all of their daughters but to none of their sons. Females usually pass the condition (defective phenotype) on to one-half of their sons and daughters. A X-linked dominant gene fails to be transmitted to any son from a mother which did not exhi...