Which statement correctly describes the significance of meiosis during gamete formation? The gametes produced contain four times the number of chromosomes as the parent cell.

The gametes produced contain half the number of chromosomes as the parent cell.

The gametes produced contain the same number of chromosomes as the parent cell.

The gametes produced contain twice the number of chromosomes as the parent cell.

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere, b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify, d)anaerobic bacteria kept thriving with more oxygen

The empty trna moves off and picks up another matching amino acid from the cytoplasm in the cell. the anticodon of the trna, with its attached amino acid, pairs to the codon of the mrna, which is attached to a ribosome. this sequence is repeated until the ribosome reaches a stop codon on the mrna, which signals the end of protein synthesis. the ribosome forms a peptide bond between the amino acids, and an amino acid chain begins to form. when a second trna with its specific amino acid pairs to the next codon in sequence, the attached amino acid breaks from the first trna and is bonded to the amino acid of the second trna.

The science for classifying and naming organisms is known as