Which of the following described roles attributed to accessory pigments such as carotenes and phycobiliproteins? (Check all that apply.)
A. The accessory pigments are involved in maintaining the Calvin cycle.
B. These pigments extend the spectrum of wavelengths that will drive photosynthesis.
C. These pigments absorb light in ranges not absorbed by chlorophylls and transfer the energy to chlorophylls.
D. Accessory pigments protect organisms from potentially damaging intense sunlight.
Answer: D
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The chi-square value is the sum for all progeny classes of (observed-expected)2/expected. Using the chi-square test for goodness of fit, calculate the chi-square value to test the null hypothesis that genes C and D are unlinked. What is the chi-square value?
A dihybrid testcross is made to determine if genes C and D are linked. The results are shown in the table.
A) 0
B) 0.0576
C) 10.8
D) 14.4
E) cannot be determined
A base-pair substitution may alter a protein by changing an amino acid or by introducing a(n)
_____________________. Fill in the blank(s) with the appropriate word(s).
The ____ are the most diverse animal group.
A. vertebrates B. insects C. humans D. protozoans E. mollusks
Genes A and B are on the same chromosome. What gametes could an individual with the allele combination AABB produce?
a)AABB b)A c)AB d)B e)AAB