Explanation:
Differentiation
Embryonic stem cells contain sets of genes; these are expressed to determine their cell type. This differentiation process is regulated via cellular signalling to switch genes on or off.
Further Explanation:
All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is tightly wound around histones as chromosomes. To produce daughter cells, the chromosomes (total number of chromosomes (2n)) are copied before the cell splits into two daughter cells. This process is known as mitosis, and occurs in cell division and growth processes. Two new nuclei are formed, along with identical cells. These are the same as the parent cell and the chromosome number (2n) is maintained.
Conversely in meiosis, the number of chromosomes (2n) is halved through meiotic divisions, producing 4 (n) germ cells (sperm or eggs), each containing half the number of chromosomes as its parent cell.
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Answer:
They are quite vicious when people or predators get too close to their territories
Explanation:
Explanation:
Echinoderms get their food and oxygen for energy. They use tube feet to obtain from the water. The tiny tube feet are involved in passing collected food towards the central mouth.These animals are detritivores performing similar functions to earthworms on the land in recycling nutrients.
Erosion breaks rocks apart.
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