__ CTAGTT base sequence on DNA forms a GAUCAA base sequence with mRNA. __ GAUCAA base sequence on the mRNA is enough to allow tRNA to deliver 3 amino acids. __ Mutations occur when the base sequences are copied from DNA incorrectly. __ Meiosis and mitosis are both involved with the process of cellular division. __ The end product of meiosis and mitosis is the same. __ Normal body cells usually have paired chromosome strands __ Diploid cells have only one half of the total genetic material. __ Sperm cells are haploid because they have no paired chromosome strands. __ Haploid cells are produced by mitosis. __ During interphase normal body cells duplicate their genetic material. __ During meiosis the cell divides twice and the chromosomes duplicate twice.

Let's evaluate the truth of each statement:<br /><br />* **CTAGTT base sequence on DNA forms a GAUCAA base sequence with mRNA.** **FALSE** DNA uses thymine (T), while RNA uses uracil (U). The correct mRNA sequence would be **GAUCAA**. The given statement uses the correct RNA base but implies the DNA sequence is directly transcribed to RNA without changing T to U.<br /><br />* **GAUCAA base sequence on the mRNA is enough to allow tRNA to deliver 3 amino acids.** **TRUE** Each codon (a sequence of three mRNA bases) codes for one amino acid. GAUCAA has two codons (GAU and CAA), therefore it codes for two amino acids.<br /><br />* **Mutations occur when the base sequences are copied from DNA incorrectly.** **TRUE** Mutations are changes in the DNA sequence, often arising from errors during replication.<br /><br />* **Meiosis and mitosis are both involved with the process of cellular division.** **TRUE** Both are types of cell division.<br /><br />* **The end product of meiosis and mitosis is the same.** **FALSE** Mitosis produces two identical diploid daughter cells. Meiosis produces four genetically different haploid daughter cells.<br /><br />* **Normal body cells usually have paired chromosome strands.** **TRUE** Somatic (body) cells are diploid, meaning they have two sets of chromosomes (one from each parent).<br /><br />* **Diploid cells have only one half of the total genetic material.** **FALSE** Diploid cells have the *full* complement of genetic material for that organism. Haploid cells have half.<br /><br />* **Sperm cells are haploid because they have no paired chromosome strands.** **TRUE** Sperm cells (and egg cells) are gametes and are haploid, containing only one set of chromosomes.<br /><br />* **Haploid cells are produced by mitosis.** **FALSE** Haploid cells are produced by meiosis. Mitosis produces diploid cells.<br /><br />* **During interphase normal body cells duplicate their genetic material.** **TRUE** DNA replication occurs during the S phase of interphase, in preparation for cell division (mitosis or meiosis).<br /><br />* **During meiosis the cell divides twice and the chromosomes duplicate twice.** **FALSE** The chromosomes duplicate *once* (during interphase) and the cell divides *twice* (meiosis I and meiosis II).<br />