In meiosis, crossing over occurs, where homologous chromosomes synapse and their chromatids exchange genetic information. During crossing over, the allele for one trait swaps places with the allele for the same trait on the homologous chromosome. At this point, the sister chromatids are no longer identical. When the chromatids split from each other, there are four unique haploid sperm or egg cells.

mendel's first law states that during the formation of reproductive cells , pairs of hereditary factors for a specific trait separate so that offspring receive one factor from each parent.

explanation:

the transfer of energy between two molecules spaced just nanometers apart plays a key role in many technologies, including photovoltaics, quantum information systems, lighting, and sensors, as well as in biophysics to measure nanometer distances and in photosynthesis. but an open question in this area is what effect, if any, the surrounding photonic environment has on this nanoscale energy transfer. by designing and performing a carefully controlled experiment to answer this question, scientists have settled the debate and found clues to improving the efficiency of many of the technologies that rely on this process.

explanation:

they have sperm in my gf's mouth

explanation:

geologic time scale (for gradpoint) =)