You would like to induce a transversion mutation into a sequence of DNA. Which type of chemical mutagen would give you the best chance of inducing the correct mutation without causing transition mutations as well?
A) base analog
B) deaminating agent
C) oxidative agent
D) alkylating agent
E) intercalating agent
C
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If a normal diploid germ cell in a bird has eight chromosomes, then ______
a. there are eight homologous pairs of chromosomes per diploid germ cell b. there are eight chromatids per diploid germ cell after DNA replication c. there are four chromosomes per cell after the first meiotic division and cytokinesis d. there are eight chromosomes in the sperm cells made from this diploid germ cell e. there are eight copies of each chromosome in this diploid germ cell
I've cloned a genomic library and know that my bacteria have foreign DNA fragments inserted into the
cloning vector. I now need to identify the specific bacteria that have the gene coding for protein X. How can I locate these bacteria?
a. DNA hybridization of the different colonies b. PCR of the same bacterial mixture that was spread on agarose plates c. restriction endonuclease treatment of DNA from some of the bacterial colonies d. agarose gel electrophoresis of DNA isolated from the bacterial colonies e. transfer the bacterial colonies to filter paper
Describe how an epigenetic trait differs from a mutated trait. What will be an ideal response?
Drosophila melanogaster is a suitable research subject for developmental genetics studies because:a
the fly is large enough for many surgical procedures. b. many developmental control genes observed in the fly are also present in humans. c. flies are not subject to genetic mutations. d. while flies are small and easy to house, they require specialized and expensive dietary requirements. e. the control of fly development is unique and unrelated to human development.