To get an erection, you will need to be sexually stimulated. Doctors usually recommend taking 50 mg once per day, but the dosage can be decreased to 25 mg or increased to 100 mg if needed. Do not take more than one dose every 24 hours.
recessive allele, the member of a pair of alleles that lacks the ability to express itself in the presence of a dominant allele at the same locus.It is expressed only in the homozygous state. Compare dominant allele.See also autosomal-recessive inheritance.he member of a pair of alleles that lacks the ability to express itself in the presence of a dominant allele at the same locus. It is expressed only in the homozygous state. Compare dominant allele. See also autosomal-recessive inheritance.
Alleles can be dominant or recessive. A dominant allele is always expressed while the recessive allele is expressed when only dominant allele is absent. If two alleles present in the organism that are identical, then it is called â Homozygous â, while if two alleles are different, and then called â Heterozygous â.ecessive Allele. From the two alleles, the weaker one is known as recessive allele. This recessive allele is expressed only in the case of homozygous. In the case of heterozygous, the dominant allele masks the phenotype of the recessive allele.