Dominance in genetics is a relationship between alleles of one gene, in which the effect on phenotype of one allele masks the contribution of a second allele at the same locus. The first allele is dominant and the second allele is recessive.For genes on an autosome (any chromosome other than a sex chromosome), the alleles and their associated traits are autosomal dominant or autosomal recessive. Dominance is a key concept in Mendelian inheritance and classical genetics.n Rr individuals the R allele masks the presence of the r allele, so these individuals also have round peas. Thus, allele R is dominant to allele r, and allele r is recessive to allele R. This use of upper case letters for dominant alleles and lower case ones for recessive alleles is a widely followed convention.
For example, suppose you made a $3,000 annual contribution to a Roth IRA early in 2003, then got a larger bonus than you expected and found that your permitted contribution was only $1,800. Your excess contribution was $1,200.If you didn't correct the excess contribution for 2003, you had to pay $72 excess contribution tax (6% of $1,200). And if you left the problem uncorrected beyond the end of 2004, you owe another $72.our excess contribution was $1,200. If you didn't correct the excess contribution for 2003, you had to pay $72 excess contribution tax (6% of $1,200). And if you left the problem uncorrected beyond the end of 2004, you owe another $72.
A Roth IRA is an IRA that, except as explained below, is subject to the rules that apply to a traditional IRA. You cannot deduct contributions to a Roth IRA. If you satisfy the requirements, qualified distributions are tax-free. You can make contributions to your Roth IRA after you reach age 70 Â½.You can leave amounts in your Roth IRA as long as you live. The account or annuity must be designated as a Roth IRA when it is set up.The same combined contribution limit applies to all of your Roth and traditional IRAs.ou can make contributions to your Roth IRA after you reach age 70 Â½. You can leave amounts in your Roth IRA as long as you live. The account or annuity must be designated as a Roth IRA when it is set up.