Which of the following statements describes the chromosome theory of inheritance as expressed in the early twentieth century? A) No more than a single pair of chromosomes can be found in a healthy normal cell. B) Individuals inherit particular chromosomes attached to genes. C) Mendelian genes are at specific loci on the chromosome and in turn segregate during meiosis. D) Homologous chromosomes give rise to some genes and crossover chromosomes to other genes. E) Natural selection acts on certain chromosome arrays rather than on genes.

How are gross production and net production different? a. net production is always greater than gross production. b. net production is always less than gross production. only animals have net production. d. only plants have net production. select the best answer from the choices provided

(amoeba sisters video recap: pedigrees and need

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.