A man has a mutation in the ATP synthase gene. This results in an inability to synthesize ATP properly, causing extreme muscle weakness. If this man has children, what is the likelihood that they will inherit this disease from him?
A. 100%
B. 0%
C. 50%
D. 25%
E. 75%
B. 0%
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Vascular plants and air-breathing animals first appeared during which time period?
a. Silurian period b. Permian period c. Cambrian period d. Ordovician period e. Cretaceous period
Many algal species have life cycles consisting of alternating haploid and diploid generations. Which sentence describes the organisms that comprise the most common life cycle in brown algae?
a. They are unicellular in both the haploid and diploid stages. b. They are colonial in both the haploid and diploid stages. c. They are multicellular in both the haploid and diploid stages. d. They are multicellular in the haploid stage and unicellular in the diploid stage.
The salivary glands that become infected by the mumps virus are located
What will be an ideal response?
Based on Charles Darwin's observations in the Galapagos Islands, why did the variety finches have different types of beaks?
What will be an ideal response?