<u>Answer</u>:
It is important for the chromosomes to condense during mitosis to facilitate chromosome movement.
<u>Explanation</u>:
The chemical called colchicine is found to be used during the process of mitosis, so as to freeze the cells, which can stop or prevent the movement of the chromosomes. This process is also essential for the faithful genome replication or transmission to those daughter cells. During the interphase cell division occurs but during the prophase the cell condensation is found to be happening. Before the process of the mitosis chromosomes are allowed to move and during this entangled and breaking were also noticed.
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Answer:
The correct answer is - 1000:1
Explanation:
Prokaryotic cells are unicellular organism of the domain prokaryotes and archaea. These cells lacks cell organelles however other components such as plasma membrane, cytoplasm and DNA. The size of the prokaryotic cell ranges between 0.1 to 5.0 µm.
On other hand eukaryotic cells also contain cellular structure like plasma membrane DNA , cytoplasm but also include true nucleus and other cell organelles that are double membrane bounded. The average cell size of these cells are tend to be - 10 to 100 of the cell size
Thus, the correct answer is - 1000:1.
In the 1960s Hess proposed that the crust separates along the rifts in the mid ocean ridges and that new seafloor forms by upwelling of hot new crust into these cracks. Magnetic anomaly patterns on the sea floor provide evidence. They are peculiar banded magnetic patterns found on the sea floor. By using the age of magnetic reversals they could calculate the rate of seafloor spreading using the equation speed=distance/time. Another line of evidence is the fact that rocks closest to the spreading ridge are younger and older rocks are further away. <span />
