Albinism is a recessive disorder in which the skin and hair fail to produce pigment. The following question(s) ask you to evaluate the pedigree chart shown here in which "N" is the allele for normal pigmentation and "n" is the allele for albinism. The shaded circles for Deirdre and Shannon represent the only individuals expressing the disorder.
What is Dawn's genotype?
A. Nn
B. nn
C. NN
D. NN or Nn
Answer: D
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Why would you have bothered to spend 10 years looking for a fossil ancestor of your new species?
A. to calibrate the time scale of your phylogeny that is based on molecular/anatomical data. B. to reconstruct the environment, and possible selective pressures, on these lineages. C. to better understand anatomical changes that occurred during the evolution of this lineage. D. None of a-c are correct. E. All of a-c are correct.
Following treatment with restriction enzymes, what procedure would be used to isolate DNA fragments of different lengths?
A. transformation B. transfection C. gel electrophoresis D. colony hybridization E. Western blotting
In what Eons was there very little appearance of new forms of life, how long did they last, and why
was there so little diversification?
What will be an ideal response?Degranulating leukocytes release ______, which cause(s) nearby arterioles to widen, increasing blood flow.
A. cytokines B. histamine C. complement D. neuromodulators E. PAMP