Cells know how to differentiate through a process called gene expression. It’s a specific combination of genes that are turned on and off.
1) RNA polymerase finds the promoter sequence on DNA.
2)RNA polymerase reads the DNA and builds complementary sequence.
3) Intron séquences are spliced out and exons are joined together.
4) The ends of the mature transcript are protected before it leaves the nucleus.
5) The mRNA attachés to the ribosome.
6) transfer RNA arrives at the ribosome and the anticodon complements to the mRNA codon.
7)amino acids form peptide bonds as tRNA molecules match the mRNA.
Different stars are different colors depending on the temperature. So, for example, a blue star is hotter than a yellow star such as our Sun.
Answer:
1.You can identify a fossil by determining it's age by comparing it to similar fossils.
2. You can measure the decay of isotopes within the fossil
Explanation:
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Using the telescope, Galileo discovered the mountains on the moon, the spots on the sun, and four moons of Jupiter. His discoveries provided the evidence to support the theory that the earth and other planets revolved around the sun.
