prometaphase
The period during the early part of metaphase in which the chromosomes become attached to the spindle fibres and align themselves at right angles to the spindle poles in a plane through the centre of ...
segregation
The separation of pairs of alleles during the formation of reproductive cells so that they contain one allele only of each pair. Segregation is the result of the separation of homologous chromosomes ...
spermatogenesis
The series of cell divisions in the testis that results in the production of spermatozoa. Within the seminiferous tubules of the testis germ cells grow and divide by mitosis to produce spermatogonia. ...