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The height of the seed head in wheat is determined by multiple genes that act in an additive fashion as predicted by the multiple-gene hypothesis for quantitative inheritance. In one true-breeding variety of wheat, the seed head is only 9 inches above the ground. In another true-breeding variety, the seed head is 33 inches above the ground. Plants from the 9 inch variety were crossed to plants from the 33 inch variety. In all of the F1 progeny, the seed head was 21 inches above the ground. After self fertilization, the F1 plants produced a F2 population in which 9 inch and 33 inch plants each appeared with a frequency of 1/256.If a 21 inch F1 plant were crossed to a 9 inch plant, how often would you expect 18 inch wheat to be found among the progeny?
Name two characteristics of slime molds by stating their mode of nutrition and how they survive conditions unfavorable for growth.
What is the total ocean area that (trillion m2) that can be classified as open ocean, that is, ocean that is greater than 960 km from the next land.
A solution containing 80% cytosine and 20% uracil was used to create synthetic RNAs. A bacterial cell free system produced proteins using these mRNAs in the following proportions.
Did the researchers follow the scientific method in their experimental design? Explain. Based on the results, was the hypothesis supported, and what can you conclude from this experiment
A 12-gram mixture of methane, CH4, and ethane, C2H6, is completely combusted in oxygen. If the total mass of CO2 produced is 34.8 grams, what was the approximate mass of the methane in the original mixture?
What is a microbial colony.
In Luria and Delbrucks classic fluctuation tests, they infected bactia with lytic viruses. Then they found the number of resistant bacteria varied greatly from culture to culture, suggesting that these mutants appeared spntaneously. If luria and delb..
Atherosclerosis is the progressive disease of blood vessels that is responsible for millions of death each year. Explain disease process, noting the involvement of specific cell/tissue types and molecules.
Make one hundred microliters of an enzyme solution at 0.1 U/microliter. You are given water to dilute the concentrated stock enzyme. The stock enzyme comes at 10 U/microliter.
What does the cell use NAD+ and NADP+ for? What is the difference between the two? In what types of biological pathways is NAD usually used in? NADP?
In cattle, coat color may be white, black, or black and white spotted. When true breeding white cattle are crossed with true-breeding black stock, the F1 is all solid white.
Do you think biochemical testing must be recommended to detect the deleterious gene in Mrs. Lehman. Which one increased their alveolar ventilation, or do they stay the same? Why with appropriate reason.
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