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Heredity and genetics (Modules 5 and 6) quiz

12questions. Pick an answer and you'll see why right away.

  1. DNA replication is described as semi-conservative because:

  2. Which enzyme synthesises new DNA strands in the 5' to 3' direction during replication?

  3. A codon consists of:

  4. In a monohybrid cross between two heterozygotes (Aa x Aa), the expected phenotypic ratio is:

  5. Sex-linked recessive disorders such as haemophilia appear more frequently in males because:

  6. Crossing over during meiosis I produces:

  7. Polymerase chain reaction (PCR) requires which key feature to work?

  8. Which statement BEST describes the role of mRNA?

  9. Mutations in non-coding (intronic) regions are usually:

  10. Natural selection acts on:

  11. Whole-genome sequencing of cancer cells is most useful for:

  12. Which is the strongest opening sentence for a Module 6 extended response on biotechnology?