synapsis

Examples of synapsis in the following topics:

• Meiosis I

  • The tight pairing of the homologous chromosomes is called synapsis.
  • In synapsis, the genes on the chromatids of the homologous chromosomes are aligned with each other.

• Chromosomal Structural Rearrangements

  • To maintain point-for-point synapsis during meiosis, one homolog must form a loop, and the other homolog must mold around it.
  • Although this topology can ensure that the genes are correctly aligned, it also forces the homologs to stretch and can be associated with regions of imprecise synapsis.
  • When one chromosome undergoes an inversion, but the other does not, one chromosome must form an inverted loop to retain point-for-point interaction during synapsis.

• Disorders in Chromosome Number

  • Misaligned or incomplete synapsis, or a dysfunction of the spindle apparatus that facilitates chromosome migration, can cause nondisjunction.

• Gene rearrangement within genomes

  • It is known that this pairing and interaction between homologous chromosomes, known as synapsis, does more than simply organize the homologs for migration to separate daughter cells.

• Forms of Signaling

• Genetic Linkage and Distances

  • It is now known that the pairing and interaction between homologous chromosomes, known as synapsis, does more than simply organize the homologs for migration to separate daughter cells.

• Generalized Recombination and RecA