Ptosis (droopy eyelid) may be inherited as a dominant human trait. Among 30 people who are heterozygous for the ptosis allele, 10 have ptosis and 20 have normal eyelids. What is the penetrance for ptosis?

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#Question id: 4968

#11. Evolution and Behavior

Which of these observations fails to support the endosymbiotic theory for the origin of eukaryotic cells?

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#Question id: 20713

#12. Applied Biology

Under anaerobic conditions and in the presence of what microbial electron transfer and respiration can proceed if suitable exogenous electron acceptors are available

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#Question id: 24192

#Aptitude

More and more office workers telecommute from offices in their own homes. The upside of telecommuting is both greater productivity and greater flexibility. Telecommuters produce, on average, 20% more than if they were to work in an office, and their flexible schedule allows them to balance both their family and work responsibilities.

The paragraph best supports the statement that telecommuters

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#Question id: 9250

#9. Diversity of Life Forms

Of the following statements about protected areas that have been established to preserve biodiversity, which one is not correct?

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#Question id: 10951

#7. System Physiology – Animal

Which blood type is depicted in the following figure?