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.
By Regina Bailey. Definition: Heterozygous refers to having two different alleles for a single trait. Related Terms: Allele, Genes, Homozygous. Examples: The gene for seed shape in pea plants exists in two forms, one form or allele for round seed shape (R) and the other for wrinkled seed shape (r). A heterozygous plant would contain the following alleles for seed shape: (Rr). Organisms have two alleles for each trait. When the alleles of a pair are heterozygous, one is dominant and the other is recessive. Using the previous example, round seed shape (R) is dominant and wrinkled seed shape (r) is recessive.