The multicolored stripes in these fly embryos represent _____
1.different operons being activated at different stages of development
2.gradients of master genes that control development
3.different mutations in flies that lead to problems with wings, thorax, etc
4.shared patterns of gene expression amongst evolutionary relatives of the fly
2
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Research using transgenic animal models of neurodegenerative diseases not only helps scientists understand the disorders, but also may lead to _____
a. new vaccines b. Drosophila genome sequencing projects c. discovery of the environmental causes of schizophrenia d. identification of the mutant gene that causes Huntington disease e. new drugs and treatments
The trace amounts of micronutrients needed by microorganisms are usually supplied as inadvertent contaminants in water and regular media components.
Answer the following statement true (T) or false (F)
In which of the following ways is cardiac muscle similar to skeletal muscle?
What will be an ideal response?
Plants that carry out the Calvin cycle during the day when the stomata are closed and fix carbon dioxide into organic acids at night when the stomata are open are called:
a) green algae. b) C3 plants. c) C6 plants. d) CAM plants. e) chemoautotrophs.