A man with the autosomal recessive disorder phenylketonuria (PKU) and a woman without PKU have a son named Peter, who does not have PKU. Peter is curious about whether his mother is a carrier for PKU. Which of the following facts would allow him to know?
What will be an ideal response?
Peter's maternal grandfather has PKU.
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If the gene encoding the enzyme rubisco is mutated such that it is non-functional, the process that would be affected is the ability to
A. make ATP. B. harvest photons. C. fix carbon. D. make O2. E. make NADPH. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about photo synthetic processes? What other information is related to the question? Choose Answer Do you have the necessary information to dissect the problem? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
When researchers analyzed the remains of Tsar Nicholas II of Russia and his family, they found that the suspected Tsar and his living great-grandniece Xenia differed at nucleotide position 16169 in the mitochondrial DNA. Retesting the remains showed that for this site in the mitochondrial genome, the purported Tsar had thymine (T) in some samples and cytosine (C) in others. The most likely cause of this finding is
A) the samples were too old. B) incomplete dominance. C) pleiotropy. D) heteroplasmy.
What do photosynthetic organisms often supply to their nonphotosynthetic partners in a mutalistic relationship?
a. sugars through nectar, fruit, etc. b. protection c. a place to live d. a place to reproduce e. essential minerals
A person carrying one gene for sickle-cell hemoglobin will be resistant to Plasmodium infection.
Answer the following statement true (T) or false (F)