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.
These terms describe whether the two alleles (versions) of a gene carried by an organism such as a fly are the same or different. 1  Homozygous means that the organism has two of the same allele. For example: a b b fly would be homozygous. 2  Heterozygous means that the organism has two different alleles.