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Which of the following tasks CANNOT be performed by earthworms?
chewing food
respiration
aeration of the soil
movement using chitin-stiff bristles
excretion of water
Destiny is a geneticist who studied the aging process, particularly the chromosome caps which failed to allow new cell division as cells aged. How would she classify the structures that she studies?
Assume that you are working in a research lab and your professor asks you to make a solution of 50X TAE. She asks you to make 1 liter, having 57.1 ml of glacial acetic acid.
Assume that r, red and sc, scarlet, are two recessive eye-color mutations that lie twenty map unites apart on the Drosphila X chromosome, and that each causes a read eye color in place of the wild type purple color.
Give examples of 2-different relationships that fungi have with other organisms. Indicate the type of relationship and explain why it was classified as such.
Based on the Nernst equation, the equilibrium potential for any ion distributed across a membrane is dependent on the internal and external concentrations of the ion,
For a specific type of cell after 3 hours, the concentration of cells per ml of solution is about 400/mL. After 10 hours the concentration has gone up to 2000/mL.
After taking samples of HIV RNA sequences from two infected patients, you plot nucleotide differences over 500 generations. You calculate a y-intercept of -5 and a slope of 0.02.
Which of the following is TRUE concerning Meiosis II.
Red-green colorblindness is a sex-linked trait. A normal woman whose father was red-green colorblind marries a normal man. What is the expected proportion of color-blind children? Five both the phenotypes and genotypes, including gender.
What experiment could be performed to ascertain if an antimicrobial agent is bactericidal or bacteriostatic? Can a bacteriostatic agent become bactericidal in the long run or vice versa? Why?
In pea plants, purple flower color is dominant to white flower color. Consider a cross between one pea plant that is heterozygous and another pea plant that is homozygous recessive. What proportion of the offspring will have white flowers?
Define imperfect adaptation and provide an anatomical or molecular example and explain why it is a case of imperfect adaption.
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