What are the causes and effects of genetic variation in human?
1 Answer
Sep 2, 2016
this is caused by synapsis
Explanation:
is the pairing of two homologous chromosomes that occurs during meiosis.
It allows matching-up of homologous pairs prior to their segregation, and possible chromosomal crossover between them. Synapsis takes place during prophase I of meiosis.
When homologous chromosomes synapse, their ends are first attached to the nuclear envelope. These end-membrane complexes then migrate,