On site means insitu.
invitro means in glass like a test tube.
It is b graduate.
(Hope this helps)
Without oxygen, life cannot be sustained as it is an essential reactant in the respiration process. So the evolution of photosynthesizing bacteria increased the amount of oxygen in the atmosphere through converting water and carbon dioxide into oxygen with the help of sunlight. This provides a suitable environment for plants and vegetation to grow; plants also photosynthesise so they encouraged the increase of oxygen in the atmosphere even further, sustaining a suitable environment for the Animalia kingdom to evolve. Thanks to this, we now have a huge range of different modern species of animals and plants.
Dominate alleles and recessive alleles (homozygous and heterozygous combinations as well). The dark eyes is the dominate allele making it to where the offspring will have it if it's EE or Ee. The red eyes is the recessive allele making it to where the offspring will have it if its ee. Since the guinea pig's offspring all have dark eyes we can assume their genetic code is either EE or Ee.