Consider a cross to investigate the pea pod texture trait, involving constricted or inflated pods. Mendel found that the traits behave according to a dominant/recessive pattern in which inflated pods were dominant. If you performed this cross and obtained 650 inflated-pod plants in the F2 generation, approximately how many constricted-pod plants would you expect to have?
A. 600
B. 165
C. 217
D. 468
Ans: C. 217
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Nucleic acid sequencing methods are based on:
a. the ability of two nucleic acid strands that have complementary base sequences to bond specifically with each other and form a double-stranded molecule. b. detecting phenotypic traits not detectable by conventional strategies. c. the principles of complementary nucleic acid hybridization with those of nucleic acid replication. d. determining the exact nucleotide sequence of a gene or gene fragment obtained from an organism.
If you eliminated all sources of calcium (dairy products, some vegetables) from your diet, the level of
which of the following would rise in an attempt to supply calcium stored in your body to the tissues that need it? a. aldosterone b. calcitonin c. mineralocorticoids d. parathyroid hormone e. angiotensin
What cell type permits the continued growth of a plant throughout its life?
A) Differentiated cells B) Secondary cells C) Meristem cells D) Mesophyll cells E) Ground tissue cells
Energy is required to link a phosphate group to ADP to make ATP. Where does the energy come from?
A) breathing B) vitamins C) enzymes D) food we eat