Two genes that are close together on the same chromosome will cross over more frequently than two genes that are further apart.
Answer the following statement true (T) or false (F)
False
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For living organisms, which of the following is an important consequence of the first law of thermodynamics?
A) The energy content of an organism is constant. B) The organism ultimately must obtain all of the necessary energy for life from its environment. C) The entropy of an organism decreases with time as the organism grows in complexity. D) Organisms grow by converting energy into organic matter. E) Life does not obey the first law of thermodynamics.
In which of the situations below would a plant be at greatest risk for the formation of air bubbles in the xylem stream?
A. during the night, when transpiration is low B. during the afternoon, when transpiration is highest C. in the early morning, with cooler temperatures and calm winds D. in the day during a drought E. the risk is the same at any time of day
Which of the following ECG tracings represents electricity flowing over the ventricles?
a. P wave b. QRS wave c. T wave d. P-Q interval e. S-T interval
Draw a cladogram that for the following animals: sponges, cnidarians, flatworms, echinoderms, chordates, molluscs,
annelids, nematodes, and arthropods. On your cladogram indicate the points where the following evolved: 1) true tissues, 2) bilateral symmetry, 3) three germ layers, 4) segmentation, 5) protostome development, and 6) deuterostome development. What will be an ideal response?