You can download a file containing these answers, saved in Microsoft Word format, by clicking on this link . Problems Chapter 7 5. If the atomic blast generated X-linked lethal mutations, the sex ratio would heavily favor females and there would be many fewer males. By scoring males for X-linked mutations, the complications of dominance are avoided.
Transitions are pyrimidine to pyrimidine or purine to purine substitutions.
Neutral mutations change the amino acid, but to a similar one with a similar effect on the polypeptide. Because frameshift mutations, unlike missense mutations, do not change a single amino acid but an entire stretch of amino acids. It is incorporated into the DNA sequnece instead of thymine, but is more likely to mispair with G than T is. By doing so, it produces two different types of effects. First, it can make the purine ring capable of mispairing, so that an alkylated G mispairs with T rather than the normal C and generates a transition.