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Darren operates a nusery and he wants to apply some pollon to fertilize som flowers. To what structure should he apply the pollen?
A. Ovule.B. StamenC. Style.D. Anther.E. Stigma.
Muscle cells, while an individual is exercising heavily and at what time the muscle becomes oxygen deprived, convert pyruvate to lactate. What happens to the lactate in skeletal muscle cells.
Assume your friend Charles D., is a forty-five year old male who is newly divorced and is living by himself in a new home. He has told you about some health issues including weight loss.
You have two flasks with borth media. One contains a species of cyanobacteria. The other flask contains E. coli. Both flasks are sealed and incuabated under optimal growth conditions for two days.
In a large interbreeding population 81% of the individuals are homozygous for a recessive character. In the absence of mutation or selection, what percentage of the next generation would be homozygous recessive? Homozygous dominant? Heterozygote?
A DNA polymerase can synthesize the DNA at a rate 300bp/min and can introduce error 2bp/400bp.If this DNA polymerase is used in a PCR reaction to amplify gene of 4000bp,calculate number of errors.
sketch the chromosomes of the parents and the F1. analyse interference and say what you think of its significance.
Assume you have reconstituted into same membrane vesicles purified bacteriorhodopsin, which is light drive H+ pump from a photosynthetic bacterium, and purified ATP synthase from ox heart mitochondria.
Compute the frequencies of the AA, Aa, and aa genotypes after one generation if the initial population consists of 0.2 AA, 0.6 Aa, and 0.2 aa genotypes
After Drosophila DNA has been treated with a restriction enzyme, the fragments are attached to plasmids and selected as clones in E. coli. By using this "shotgun" technique, David Hogness recovered every DNA sequence of Drosophila in a library.
Compare gymnosperms to angiosperms. What are some differences and similarities between a pine cone and a fruit? Give examples of each group.
Fish, reptiles, and mammals are descendents of a common vertebrate ancestor that had a heart. Fish hearts have two chambers, most reptile and amphibian hearts have three chambers.
A mating is made between two individuals who are first cousins and individual X is produced from this mating. Individual E is a parent of S and individual F is a parent of D.
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