Two pure-breeding phlox plants were crossed, one with dark-blue flowers and the other with pink flowers. The F1 generation all had dark-blue flowers. When the F1 were crossed with each other, the F2 generation consisted of 176 plants: 101 with dark-blue flowers, 33 with light-blue flowers, 30 with red flowers, and 10 with pink flowers. How is flower color controlled in phlox?
A) one gene with four alleles
B) one gene with two codominant alleles
C) two genes whose alleles interact additively
D) two genes with dominant epistasis
C) two genes whose alleles interact additively
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The activity of MinC and MinD direct whether a bacterial cell will be coccoid or bacillus shaped
Indicate whether the statement is true or false.
You sprain your ankle at a roller derby practice. How would you treat your injury?
A) First use ice to reduce swelling, and then use heat much later to aid healing. B) First use heat to aid healing, and use ice later to reduce swelling. C) Use ice only because it will reduce swelling and increase blood flow to aid healing. D) Just leave it alone. Ice and heat both make the injury worse.
The seed develops from the ____.
A. gametophyte B. ovary C. ovule D. pollen grain E. microspores
Which of the following DNA repair processes is most likely to introduce mutations into the repaired DNA?
A. base-excision repair B. light repair C. nucleotide-excision repair D. mismatch repair E. SOS repair