When a bacteriophage genome incorporates itself into the chromosome of the host, that
phage genome is referred to as a(n) ________.
Name the polyploid condition that is formed from the addition of an extra set of
chromosomes identical to the normal diploid complement of the same species.
When X-rays penetrate cells, electrons are ejected from atoms of molecules. Stable
molecules can be transformed into which two types of hazardous materials?
Molecular/structural orientations (gradients) in an egg are thought to play a significant
role in development. What is the origin of such gradients? What evidence indicates that
the maternal genotype is involved in providing such gradients?
Describe the DNA base sequence arrangement at the end of the Tetrahymena
chromosome and the resolution of DNA replication at the end of a linear DNA strand.
Under what conditions does one expect a 1:1:1:1 ratio?
Present a rationale for using DNA sequence polymorphisms as an index of genetic
diversity. Is genetic diversity directly proportional to evolutionary (phylogenetic)
diversity?
One type of mutation involves the replacement of a purine with a purine, while another
causes the replacement of a pyrimidine with a purine or the reverse. What general terms
are associated with these two mutational phenomena?
Phenotypically wild-type F1female Drosophila, whose mothers had light eyes (lt) and
fathers had straw (stw) bristles, produced the following offspring when crossed to
homozygous light-straw males:
Compute the map distance between the light and straw loci.
What is the relationship between the degree of crossing over and the distance between
two genes?
Explain why lacOc mutations are cis-acting while lacI mutations can be trans-acting.
What is meant by the term chiasma?
What term is applied to a variety of projects whereby genome sequences are deposited
in databases for research purposes?
Certain mutations in the regulator gene of the lac system in E. coli result in maximal
synthesis of the lac proteins (β-galactosidase, etc.) even in the absence of the inducer
(lactose). Provide an explanation for this observation.
Provide a definition of cancer at the genetic level.
In the 1860s, a Swiss chemist, Friedrich Miescher, isolated an acidic substance from
cell nuclei. What was the name of this substance, and what was its significance?
What term is used to refer to the process in which DNA can be introduced into host
bacterial cells?
In the context of recombinant DNA technology, what is meant by the term vector?