Cell differentiation<span> is how generic embryonic </span>cells <span>become specialized </span>cells. This occurs through a process<span> called gene expression. Gene expression is the specific combination of genes that are turned on or off or also known as expressed or repressed, and this is what dictates how a </span>cell<span> works. </span>
When a cell divides it makes two whole new cells this process is called mitosis.
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The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the Lithosphere
Explanation:
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Explanation:
In a diploid organism, one that has two copies of each chromosome, two alleles make up the individual's genotype. ... An example is the gene for blossom color in many species of flower — a single gene controls the color of the petals, but there may be several different versions (or alleles) of the gene.
