When you buy an Apple hardware product such as a Mac or an iPad, you get a one-year hardware warranty and 90 days of free phone-based tech support, starting from the date of purchase.ow long it extends support: For Macs and displays, AppleCare gets you a total of three yearsâ supportâin other words, it extends phone support by 33 months and the limited warranty by two years (for a total of three years).
Definition of heterozygous. : having the two alleles at corresponding loci on homologous chromosomes different for one or more loci.
1 When both alleles are the same, the condition is called the homozygous condition; if the alleles differ, then it is the heterozygous condition. 2  When heterozygous, one allele is dominant (A), the other is recessive (a).  Homozygous dominant = AA, homozygous recessive = aa, and heterozygous = Aa.