704 Chapter 20 NEL
24.Identifythe amino acid specified by the CAG codon.25.Explainwhat increased inclusions of the CAG codon in the
Huntington gene might do to the protein structure of the
Huntington protein.26.Describethe steps a lab would take to diagnose the
number of CAG repeats on the Huntington gene of an
individual. Identifythe specific technologies and describe
how they would be used in this analysis.29.Identifythe technique listed above that would best
determine paternal inheritance of Aboriginal ancestry.
Explainyour selection.30.Sketcha diagram of meiosis that shows the formation of a
human egg. Label the important features and clearly label
the ploidy of the key stages. Describe how mtDNA is
inherited during the formation of the human zygote, and
identify which parent would be contributing the genetic
markers for Aboriginal ancestry if they were identified in
mtDNA.31.Identifyand describetwo DNA technologies that would
be used to carry out these tests.32.Identifytwo advantages and two disadvantages to both
society and individuals that might arise from using DNA
technology to trace ethnic patterns of inheritance.Use the following information to answer questions 27 and 28.The first recombinant DNA organisms were bacteria that were
altered for commercial purposes to produce a protein product
when grown in culture. These recombinant organisms caused
little public concern, as they were perceived to be contained
within a laboratory or factory. However, subsequent genetic
engineering projects have included the release of engineered
organisms into the environment. Agricultural transgenic
products being grown today include golden rice, insect-
resistant maize and cotton, and herbicide-resistant canola and
corn, to name a few.Use the following information to answer questions 29 to 32.A company, Gene Tree, offers kits that can be used to test
whether an individual has DNA sequences found most often in
the Aboriginal peoples. The tests are compared to known
genetic markers in mitochondrial DNA (mtDNA), Y
chromosome DNA, and nuclear DNA that are unique to the
Aboriginal peoples of North America. Testing to establish the
ethnic background of individuals may raise concerns about the
use of this information. Historically, there have been political,
legal, and moral issues around attempts to identify an
individual’s ethnicity as distinct from those of others.27.Identifyanddescribethe technologies used to create
these recombinant organisms.28.Explainthe concerns of those who oppose the use of
these organisms, and the benefits touted by their
proponents.DEDEDE