A somatic reflex is that somatic reflex has a only one motor neuron that is present in it reflex arc.
<h3>What is reflex?</h3>
The term reflex is in common use in anatomy, physiology, biology and psychology. Reflex has to do with an action that a person could perform unconsciously. The reflex that is performed by an individual could be autonomic reflex or a somatic reflex.
For the autonomic reflex, there are two neurons that are found to make up the motor components that are present in the reflex arc while the somatic reflex has only one motor neuron that is present in it reflex arc.
As such, we can conclude finally that what differentiates an autonomic reflex from a somatic reflex is that somatic reflex has a only one motor neuron that is present in it reflex arc.
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When DNA is copied to RNA, its called transcription
The function of fibrous connective tissue covering the long bones called forming new bone in the event of a fracture.
<h3>What is connective tissue?</h3>
- Tissue that supports, protects, and structures the body's other tissues and organs.
- Connective tissue also stores fat, aids in the movement of nutrients and other substances between tissues and organs, and aids in the repair of damaged tissue.
- Cells, fibres, and a gel-like material comprise connective tissue.
- Connective tissue is further classified as loose connective tissue, dense connective tissue, and specialized connective tissue.
- Periosteum is a layer fibrous connective tissue covering the diaphysis also involved in the formation and repair of a bone.
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Answer:
1. They must be removed before sister chromatids or homologous chromosomes can separate
Explanation:
During the S-phase of the cell cycle, not only does DNA have to be replicated, but also newly synthesized DNA molecules have to be connected with each other. This replicated DNA (sister chromatids) remain physically connected with each other from S phase until metaphase. This physical connection is called Sister chromatids cohesion.
Sister chromatid cohesion depends on COHESIN, a tripartite protein complex that forms a ring structure to hold sister chromatids together during mitosis and meiosis. Cohesin regulates the separation of sister chromatids during cell division, either mitosis or meiosis. This sister chromatid cohesion is essential for the biorientation of chromosomes on the mitotic or meiotic metaphase spindle, and is thus an essential prerequisite for chromosome segregation. Without the cohesion, sister chromatids would not be segregated symmetrically between the forming daughter cells, resulting in aneuploidy.
Cohesion is established during S-phase of DNA replication, and the cohesins hold the sister chromatid together after DNA replication until anaphase when the removal of cohesin leads to separation of sister chromatids (meiosis II and mitosis) and homologous chromosomes (meiosis I).