Why was rii locus chosen by
Benzer for his experiment?
Does unwinding DNA cause aging?
Can you name a few potential risks of Genetic Engineering?
How DNA is being Transplanted?
A number of plant species have a recessive allele for
albinism; homozygous albino (white) individuals are unable
to synthesize chlorophyll. If a tobacco plant heterozygous
for albinism is allowed to self-pollinate and 500 seeds
germinate: a)how many offspring will be the same genotype
as the parent? b)how many seedlings would you expect to be
what is the role of Beta-lactamase in Gene Cloning ?
What situations might be viewed as ethical uses of human
cloning? Are you doubtful, fearful, or hopeful about human
In hogs a gene that produces a white belt around the
animal's body is dominant over its allele for a uniform
body. Another independent dominant gene produces fusion of
the hoof (syndactyly). Suppose a uniformly colored hog
homozygous for syndactyly is mated with a normal footed hog
homozygous for the belted character. What would be the
phenotype of the F1? If the F1's interbreed, what would be
the phenotypic ratio of the F2?
what is Homosexual Gene?
The village of Oblong has 400 normally-shaped residents.
Transferrin is an iron carrier found in blood, and
electrophoretic variation of this protein is determined by
an autosomal codominant system. The citizens of Oblong were
typed for their transferrin complements. The distribution
of transferrin phenotypes was: 100 CC, 100 CD, and 200 DD.
What is the frequency of the C allele?
what is the connection between a chromatid and a replicated
A single base exchange mutation occurs in the promoter of
the TRP operon. How the operation of the HIS operon might
be affected in two ways?