Answer:
Crossing over occurs between prophase I and metaphase I and is the process where two homologous non-sister chromatids pair up with each other and exchange different segments of genetic material to form two recombinant chromosome sister chromatids.
Explanation:
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Highlighted structure is median nerve cord only.
It originates from brachial plexus from medial and lateral cords. Lateral wire best medial and lateral cords lateral and posterior cords medial cord handiest.
The medial twine is the a part of the brachial plexus fashioned with the aid of of the anterior department of the lower trunk (C8-T1). Its name comes from it being medial to the axillary artery as it passes through the axilla. the opposite cords of the brachial plexus are the posterior cord and lateral cord.
The lateral cord gives rise to the lateral pectoral nerve. The posterior wire offers upward push to the higher subscapular nerve, thoracodorsal nerve and decrease subscapular nerve. The medial wire offers upward thrust to the medial pectoral nerve, medial cutaneous nerve of the arm and medial cutaneous nerve of the forearm.
The posterior cord is part of the brachial plexus. It includes contributions from all the roots of the brachial plexus. Posterior twine. Plan of brachial plexus.
Learn more about nerve cord here:-brainly.com/question/26348097
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Https://www.ncbi.nlm.nih.gov/books/NBK10039/
