â¢ The AppleCare Protection Plan is available through Bell retail locations and on apple.ca. â¢ Clients can purchase and register for AppleCare: â At time of their iPhone purchase, or. â Within one year (up to day 364) of their original iPhone purchase.ppleCare is an exclusive protection plan specifically designed for iPhone clients and backed by Apple. AppleCare extends the standard 1 year manufacturerâs limited warranty period by one additional year and the 90-day complimentary troubleshooting service offered by Apple is also extended.
1 A heterozygous mutation is a mutation of only one allele. 2  A homozygous mutation is an identical mutation of both the paternal and maternal alleles. 3  Compound heterozygous mutations or a genetic compound comprises two different mutations in the paternal and maternal alleles.utations result from damage to DNA which is not repaired, errors in the process of replication, or from the insertion or deletion of segments of DNA by mobile genetic elements. Mutations may or may not produce discernible changes in the observable characteristics (phenotype) of an organism.
A dominant allele masks the expression of the recessive geneâs trait. The alleles are homozygous if they code for the same trait and heterozygous if they code for different traits. A homozygous pair might have two dominant or two recessive alleles. Dominant genes are indicated by capital letters, recessives by small letters. For example, P stands for round peas and w stands for the wrinkled variety. A heterozygous pea plant has the Pw allele pair, while a dominant homozygous plant has two dominant genes, PP. Both have round peas. Codominance. Animal scientists have identified the genes that give a horse a roan-colored coat as being codominant.