View Full Document. ï¬ 1  Primers determine the specificity of the PCR reaction. ï¬ The distance between the primer binding sites will determine the size of the PCR product. 2  T m ï¬ For short (14â20 bp) oligomers: ï¬ T m = 4Â° (GC) + 2Â° (AT)
Estrus, or heat, is the period in which the doe will stand and allow the buck to breed her. This phase of the reproductive cycle may last between 12 to 36 hours. The period from one heat cycle to the next is referred to as the estrous cycle. In goats, the estrous cycle occurs every 18 to 24 days, or 21 days on average.
A goat will generally live for 10 to 12 years. Male goats, or bucks, tend to have shorter life spans than female goats, or does, and wethers. This is partly caused by the stress involved with going into rut yearly. Some goats live up to 15 years.