You sample a population of butterflies and find that 56% are heterozygous at a particular locus. What should be the frequency of the recessive allele in this population?
A) 0.08
B) 0.09
C) 0.70
D) Allele frequency cannot be determined from this information.
D
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How do we know green light is not absorbed by chlorophyll?
A. Green light has such a small wavelength that most of it goes straight through the leaves without interacting with the chlorophyll. B. Not enough of the green light penetrates the ozone layer and makes it to the plant. C. Green light is the wavelength of light that is reflected instead of absorbed by the chloroplasts. D. Green light does not have enough energy to excite an electron in the photosystem.
Amniocentesis is
a. a surgical means of repairing deformities. b. a form of chemotherapy that modifies or inhibits gene expression or the function of gene product. c. used in prenatal diagnosis to detect chromosomal mutations and genetic disorders in embryos. d. a form of gene replacement therapy. e. all of these.
A tunicate looks like a sponge. How could a biologist distinguish it from a member of the Porifera?
A. Unlike tunicates, sponges are symmetrical. B. Tunicates have a stomach. C. Tunicates do not filter feed. D. Only tunicates produce gametes.
Which of the following apply to the demography of human populations today? (Check all that apply.)A) Our ecological footprint is decreasing.B) We are using distributed resources disproportionately-less than 20% of us use over 80% of the energy.C) We have plenty of resources still untouched.D) We use almost half of the Earth's land.E) We use over half of all renewable fresh water sources.
What will be an ideal response?