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❖ The term that matches this statement is Metaphase. Metaphase occurs in Mitosis and Meiosis. The homologous chromosomes line up in single file.
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Used to define and identify geological times.<span />
Answer:
Scientists observing something then they try to explain what has been seen. The explanation is called a hypothesis.
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Explanation:
Answer:
In an interval of 5 minutes, ER has ribosomes attached to it which makes proteins synthesizing in the lumen of the endoplasmic reticulum incorporates proteins in the small transport vesicles.
These vesicles transport and fused to the Golgi bodies where proteins modified which can be seen in 15 minutes in the figure. Then modified proteins are transported from the cell cytosol with the help of secretory vesicle to the extracellular matrix and to the required organs.
Answer:
Jaws and a swimming bladder
Explanation:
A defining characteristic between sharks and rays that distinguish them from ray-finned fish is the *possession of jaws in sharks* and rays;and the *possession of swimming bladder in ray-finned fishes*.
Characteristics of sharks and rays are as follows :
They are cartiiliginous fishes; they possess *strong jaws* lined with teeth; body dorsoventrally flattened, fusiform (spindle shaped) with heterocercal tail(diphycercal in Chimaeras); paired fins; *no swimming bladder or lungs*; pelvic fins in males often modified to form clappers; Gill arches internal to gills; reduced notchord; lateral-line system; paired nostrils; internal nares absent; separate sexes; internal fertilization and direct development; oviparous, oviparous, or ovoviviparous. Examples include, Spiny dog fish or dog shark, Ray Raja, Chimaera.
Characteristics of ray-finned fishses:
They generally lack paired fins; no internal nares; *air sacks usually function as swimming bladder*; skeleton usually well ossified. Blind olfactory sacs (do not open into the mouth); Tail homocercal. Examples include Tilapia, Claris,and Polypterus.
