Ovules develop within the ovary, which is located in the swollen lower portion of which floral organ?
A. stamen
B. stigma
C. anther
D. filament
E. pistil
Answer: E
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You are asked to give a classroom demonstration of DNA supercoiling. To do so, you take two different colored pieces of rubber tubing, twist them very tightly and excessively around each other and join the ends of the tubing appropriately. Next, you relieve the supercoiling by breaking one strand and unwinding it. In this demonstration, the breaking and unwinding to relieve the supercoiling simulates the action of
A. exonucleases. B. polymerases. C. ligases. D. topoisomerases. E. primases. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about supercoiling? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The offspring (F1) resulting from the cross between two red flowered plants are 3/4 red and 1/4 white. The most likely genotype of both red flowered parental plants (P1) is ____
a. codominant recessive b. incomplete dominant c. incomplete recessive d. heterozygous e. homozygous recessive
Marine cartilaginous fishes overcome water loss to their environments by:
a. having specialized chloride cells in their gills that prevent water loss. b. having specialized chloride cells in their gills that continuously excrete salts. c. storing urea in their body fluids, which causes them to be hypertonic to seawater. d. producing very small quantities of urine. e. drinking large quantities of freshwater
During which of the following stages of meiosis is the cell diploid?
A. metaphase II B. anaphase II C. metaphase I D. prophase II