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Which of the following would most likely cause a mutation with the greatest deletrious effect?
A. An insertion of a nucleotide triplet into a DNA strand thatcodes for an mRNAB. A deletion of a nucleotide triplet from a DNA strand thatcodes for an mRNAC. A single substitution of a nucleotide in a DNA strand that,when transcribed, results in a change in the nucleotide occupyingthe third codon position in an mRNAD. A single substitution of a nucleotide in a DNA strand,that, when transcribed, results in a change in the nucleotideoccupying the first codon position in an mRNAE. A single addition of a nucleotide in a DNA strand thatcodes for an mRNA
How many different genotypes are possible among the progeny from a sexual cross between an organism that is Aa Bb and another that is also Aa Bb? Assuming complete dominance exists at both loci, how many different phenotypes are possible from this..
Explain why the increased prevalence of sickle cell disease among African Americans actually has more to do with the environment than skin color or other phenotypes used to define races.
Two true breeding pea plants were crossed. One parent is round, terminal, violet, constricted, while other expresses the respective contrasting phenotypes of wrinkled, axial, full.
What is the purpose of the long refractory period during cardiac muscle contraction (compared to that of skeletal muscle)? What could happen if cardiac muscle did not have this long refractory period? Explain.
G3-15ml frozen bacterial pellet was added to the breaking buffer and a freeze-thaw procedure mixing the two solutions through sucking up the mixture up and down in the vial was performed.
What is an ion? a.) an atom that is sharing electrons with another atom b.) an atom that loses all of its protons c.) an atom that has lost one or more neutrons d.) an atom that has either gained or lost electron(s).
what happens to the pressure inside of a cell as water flows in? why is this pressure important to plants?
q. two different strains of fies are each homozygous for different recessive mutant alleles of the short wing gene sw1
describe one diference between the action potentials produced by cardiac contractile cells and the action potentials produced by skeletal muscle fibers. PLEASE BE SPECIFIC.
Compare DNA to a cookbook. The book is kept in a library and cannot be checked out (removed). Start with the letters and words in the cookbook compared with the bases and codons in DNA; end with the amino acid chain being folded into a protein, an..
What are halophile, thermoacidophile and methanogen archaebacteria?
q1. consider a hiv enzyme called protease. the amino acid residues at the active site are highly hydrophobic. in
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