The relationship between energy and wavelength is ________
a. invariable, all photons have the same energy regardless of their wavelength
b. inversely proportional, short wavelengths carry high-energy photons
c. directly proportional, long wavelengths carry high-energy photons
d. unpredictable and dependent on the initial speed of the photons
b
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A fur color gene in rabbits has a white dominant (W) and brown recessive allele (w). The environment changes suddenly and none of the white rabbits survive. In a population of 10,000 rabbits the initial frequency of W in the pool was 0.7. How many generations would be required to eliminate all W alleles from the population? Assume that there is no mutation and the population meets all other Hardy-Weinberg conditions.
A. 1 B. 2 C. 5 D. 20 E. can never be eliminated
Reverse transcriptase creates a single-stranded DNA molecule that is complementary to an mRNA template
a. True b. False
The energy source of photosynthesis is
A. oxygen. B. sunlight. C. carbon dioxide D. chlorophyll. E. glucose
An ________ may arise when three sperm cells are involved in fertilization of a single egg
A) aneuploidy B) allotetraploid C) allotriploid D) autotetraploid E) autotriploid