Interphase is about 90% of the cell cycle in which the cell has its normal function, replicates its DNA, etc. :)))
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<span>Sense organs, such as the ear, and sensory receptors, such as those in the skin, are sensitive to external stimuli such as sound and touch.</span>
<span>Females have two X chromosomes in their cells, while males have one X and one Y chromosome. Mitosis; before it divides it replicates & meiosis; sex cells have half the amount of chromosomes that a normal cell has so when they join another, there are 46 chromosomes in the cell.</span>
Answer
Its marine animal.
Explanation
Cephalochorates are small marine animal with unique features like segmented body and have notochord which are from head to tail and persist through out the life of this animal .They are present in modern oceans in form of lencelets which is also called amphioxus. They have hollow dorsal nerve chord and gill slits. Unlike the other vertebrates the nerve chord is never replaced by vertebrae
The vertebral column, when seen from the side, has 4 curves: 2 convex curves (cervical and lumbar curves) and 2 concave (thoracic and sacral curves). This curves are the feature of the skeleton that allow a child to maintain balance in the upright position eventually.
When we are born we have a single concave curve throughout the whole vertebral column but, as we grow, still in the early months as we try to hold our head, the cervical curve starts to develop, and later, as we try to sit up, stand up, and walk, the lumbar curve aslo starts to develop. In few years we have all curves fully developed.