Darwin and Wallace
1.developed our system of classification.
2.described natural selection.
3.discovered DNA.
4.described the functions of genes.
2
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You have been assigned to conduct a scientific study on the effects of four types of fertilizer on broccoli growth. You visit several broccoli farms to make observations and use these observations to find preliminary correlations and form hypotheses. To test your hypotheses, you set up five plots of broccoli-one plot for each fertilizer type plus a control plot, which is not fertilized. When you meet with your professor to discuss your progress, he tells you that your project is missing an important component of the scientific method. What is missing?
A. Testing the fertilizer in a natural setting on wild relatives of broccoli B. Setting up plots that receive more than one type of fertilizer C. Testing biotic factors such as herbivore abundance D. Using more than one plant species so your conclusions can be more broadly applied E. Replicating each fertilizer treatment in multiple plots
Which of the following causes DNA to wrap tightly around histones, essentially shutting down transcription?
A. Methylation B. Acetylation C. Nitrogenation D. Dehydration E. Carbonation
In the mouse, gene A allows pigmentation to be deposited in the individual coat hairs; its allele a prevents such deposition of pigment, resulting in an albino. Gene B gives agouti (wild-type fur); its allele b gives black fur. What would the expected
ratio of the progeny be in a cross of a doubly heterozygous agouti mouse mated with a doubly homozygous recessive white mouse? A) 9 (agouti) :3 (black) : 4 (albino) B) 9 (black) : 27(albino) C) 1 (agouti) :1 (black) : 2 (albino) D) 3 (agouti) :4 (black) : 9 (albino) E) 1 (agouti) :1 (black) :1 (albino)
Know the examples of Exergonic reaction in the body
What will be an ideal response?