The exchange of genetic material between non-sister chromatids that may result in new gene combinations on the chromosomes is called
select one:
a. crossing over
b. synapsis
c. duplication
d. reduction division
e. random assortment

Crossing over

Explanation:

Crossing over is the process that occurs during pachytene of prophase I of meiosis I. During crossing over, the part of the non-sister chromatids of two homologous chromosomes are exchanged. It results in the formation of new gene combinations and thereby imparts genetic variations to the sexually reproducing organisms.

The synaptonemal complex assists in synapsis, the pairing of homologous chromosomes during zygotene of prophase I. Zygotene is followed by the pachytene stage.

Crossing over includes enzymatic breakdown and rejoining of DNA molecules to facilitate the exchange of genetic material between the paired homologous chromosomes.

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the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question