What are the three necessary characteristics of the hereditary molecule in cells?
What will be an ideal response?
(1 ) It must be able to carry information, (2 ) it must be able to accurately pass on the information to progeny cells (replicate), and (3 ) it must be capable of change (evolution).
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The most frequent clinical signs of chronic Chagas disease involve the enlargement of which organ?
a. Heart b. Liver c. Spleen d. Lung
L-lysine is an essential amino acid and must be supplied in the diet. By comparison, the stereoisomer D-lysine is not biologically active. Why can your body only utilize one form?
A. Since the L form and D form are enantiomers, they will bind together and inhibit utilization of the D form. B. Antibodies recognize the D form and destroy it before your body can use it for nutritional purposes. C. Enzymes can only recognize a single, specific stereoisomer. D. Since the L form and D form are chiral molecules, they will bind together and inhibit utilization of the D form.
Consider a population with a constant size Ne = 5,000 that experiences a mutation rate of 0.00005, with an initial F value of 0.15
What is the probability that two alleles selected at random from the offspring of this population will be identical by descent? a. 0 b. 0.15 c. 0.30 d. 0.40 e. None of the above
The animal group with the highest biodiversity in the Amazon basin is
a. amphibians. b. birds. c. insects. d. mammals.