alleryStart learning →What is synapsis?
AThe splitting of a centromere in meiosis two
BThe pairing and interaction of homologous chromosomes
CThe winding of DNA around its packaging proteins
DThe random alignment of chromosomes on the plate
Answer & Solution
Correct answer: B. The pairing and interaction of homologous chromosomes
1. Before the first division of meiosis, homologous chromosomes find each other and pair up.
2. That pairing and interaction between homologues is called synapsis.
3. Synapsed homologues then undergo reciprocal physical exchanges at their arms.
4. So synapsis does more than line the homologues up for separation, it sets up crossing over.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 13 "Modern Understandings of Inheritance", section 13.1 Chromosomal Theory and Genetic Linkage_
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