With both incomplete dominance and codominance, one expects heterozygous and homozygous classes to be phenotypically identical
Indicate whether the statement is true or false
FALSE
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If she moves the promoter for the lac operon to the region between the beta galactosidase (lacZ) gene and the permease (lacY) gene, which of the following would be likely?
A) The three structural genes will be expressed normally. B) RNA polymerase will no longer transcribe permease. C) The operon will still transcribe the lacZ and lacY genes, but the mRNA will not be translated. D) Beta galactosidase will not be produced. E) The cell will continue to metabolize but more slowly.
Some types of dinoflagellates (single-cell eukaryotes) show a circadian rhythm. They produce light for about 12 hours in the dark (at night) and photosynthesize for about 12 hours in the light (during the day)
Say you took some dinoflagellates at the end of their 12 hours of darkness and put them on a 24-hour light cycle. How would the cells likely respond during the first day of that cycle? A. The cells would photosynthesize for the full 24 hours. B. The cells would photosynthesize for more than 12 hours but less than the full 24 hours. C. The cells would produce light for the full 24 hours. D. The cells would not produce light or photosynthesize.
Jaws evolved during the Silurian period by modification of _____ in a jawless ancestor
1.the cartilaginous skeleton 2.the second pair of gill arches 3.gill slit support structures 4.the spiracle
Four of the following explain the area effect on island diversity. Which one is the exception?
A. Larger islands have more habitats. B. Smaller islands have more varied and higher elevations. C. Larger islands intercept more colonizers. D. Smaller islands have less complex topography. E. Smaller islands have a greater probability of a species becoming extinct.