The test cross ab/ab × AB/ab is performed. The following number of progeny of each genotype are obtained:
38% AaBb, 12% Aabb, 12% aaBb, 38% aabb. What is the distance (in map units) between the two genes in question?
A. 38 centimorgans (cM)
B. 24 centimorgans (cM)
C. 19 centimorgans (cM)
D. 12 centimorgans (cM)
E. 6 centimorgans (cM)
D
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Four small bags are filled with a 10% starch solution. The membrane of each bag contains microscopic pores large enough to let smaller water molecules cross but too small for the larger starch molecules to cross.Each bag is placed in a separate beaker as follows:Bag 1 is placed in distilled water containing no starch (0% starch).Bag 2 is placed in a solution of distilled water and 5% starch.Bag 3 is placed in a solution of distilled water and 10% starch.Bag 4 is placed in a solution of distilled water and 50% starch.The bags are weighed initially and at regular intervals for a specific period of time. Some bags saw a change in weight, and some did not. Answer the following questions based on the expected outcomes of this experiment.a. Which bag should weigh approximately the same at the
end of the experiment as it did at the beginning of the experiment?b. Which bag is expected to be the heaviest at the end of the experiment?c. Which bag is expected to be the lightest at the end of the experiment? What will be an ideal response?
What is the role of oxygen gas in aerobic respiration?
a. To provide electrons for NADH b. To accept energy from glucose c. To accept electrons from electron transport d. To provide kinetic energy for ATP synthase e. To donate electrons for electron transport
A fasting animal whose energy needs exceed those provided in its diet draws on its stored resources in which order?
A) fat, then glycogen, then protein B) glycogen, then protein, then fat C) liver glycogen, then muscle glycogen, then fat D) muscle glycogen, then fat, then liver glycogen
Which act(s) mainly to regulate salt and water balance?
A) mineralocorticoids B) glucocorticoids C) androgens D) oxytocin