Before Mendel, people had observed inheritance of dominant and recessive traits by following many generations of plants and animals. What was different about Mendel's work?
A) He followed more generations than anyone else.
B) His results were immediately accepted and applied to other studies.
C) He used a plant that had never been cultivated before.
D) He did both cross- and self-fertilizations.
E) He kept careful count of his results, including mathematical analysis.
Answer: E
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A researcher wants to determine if a unicellular organism he discovered is an autotroph or a heterotroph
He radioactively labels the carbon in CO2 and C6H12O6, and exposes one culture of his organism to the labeled CO2 and another culture to the labeled C6H12O6. What would happen if his organism is an autotroph? A. Labeled carbon would be seen in the carbohydrates of CO2-exposed organisms. B. Labeled carbon would be seen in the carbohydrates of C6H12O6-exposed organisms. C. Labeled carbon would not be seen in the carbohydrates of either culture. D. Labeled carbon would be seen in carbohydrates of both cultures.
Thinking about the processes of photosynthesis and cellular respiration in plants, plants are net
A. glucose and O2 consumers. B. O2 and CO2 producers. C. O2 and CO2 consumers. D. glucose consumers and CO2 producers. E. O2 producers and CO2 consumers.
The feedback loop controlling ADH secretion
is classified as what type of feedback loop?
a. helpful b. positive c. negative d. destructive e. incomplete
Which of the following accounts for someone who has had regular herpesvirus-mediated cold sore or genital sore flare-ups?
A) re-infection by a closely related herpesvirus of a different strain B) re-infection by the same herpesvirus strain C) copies of the herpesvirus genome permanently maintained in host nuclei D) copies of the herpesvirus genome permanently maintained in host cell cytoplasm