The inheritance pattern in which the mother provides gene products to the developing egg cells is called
A. X inactivation.
B. extranuclear inheritance.
C. genomic imprinting.
D. linkage.
E. maternal effects.
E. maternal effects.
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A prolonged period without rain is causing a major drought in the American Midwestern states. How would you expect crops to respond initially to the stress caused by the drought?
A. They will take in more carbon dioxide. B. They will take in less carbon dioxide. C. They will release more oxygen. D. They will increase rates of photosynthesis. E. They produce fewer secondary metabolites.
Under anaerobic conditions, the end-product of glycolysis is converted to
What will be an ideal response?
Which statement about leaves is NOT correct?
A. Gas exchange occurs through tiny openings in the leaf surface called stomata. B. Vascular tissue is arranged in a net pattern in eudicots and a parallel pattern in monocots. C. In eudicots, the photosynthetic mesophyll is made up of an upper spongy layer and a lower palisade layer. D. The epidermis is covered by a waxy layer of cuticle that reduces water loss. E. Regulation of gas exchange through the leaf is the responsibility of the guard cells.
Which of the following statements regarding fecal transplant is correct?
A. The goal is to completely eradicate Clostridium difficile from a patient's gut microbiota and replace it with a healthy community. B. Fecal matter must be carefully disinfected and screened for viruses, cysts, and endospores before transfer to a recipient patient. C. Donors and recipients must be carefully matched to prevent an immune reaction in the recipient. D. This treatment is designed to jump-start the intestinal microbiota after an infection with Clostridium difficile resuts in acute diarrhea.