Write a brief note on the following
(a) Synaptonemal complex
(b) Metaphase plate
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Biology Foundation for Class 10.
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Ans.
(a) Synaptonemal complex consists of protein. It is made between two homologous chromosomes in the process of meiosis. It is the site of matching, synapsis and recombination. During prophase–I of meiosis, the homologous chromosomes get matched through the synaptonemal complex. Through this complex, the exchange of genes takes place. Hence, reconnection or recombination of genetic characters happens through a synaptonemal complex.
(b) The metaphase plate is an imaginary line which is at equal distances from the two centrosome poles. During the process of metaphase, the chromosomes get together at the metaphase plate. The even alignment of chromosomes happens because of the facing kinetochore microtubules.