What is the correct order of steps of morphogenesis in Drosophila melanogaster?a. Gap genes divide the body into broad regionsb. Establishment of anterior / posterior axesc. Homeotic genes determine which body parts arise from each regiond. Pair-rule genes are activated in order to develop a preliminary segmentation pattern
A. a - b - c - d
B. a - d - c - b
C. a - d - b - c
D. b - a - d - c
E. b - a - c - d
Answer: D
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When an environmental stimulus is received, the signal is usually transmitted through three types of nerves cells. In which order is the signal transmitted through these cells?
A. sensory neurons, motor neurons, interneurons B. motor neurons, sensory neurons, interneurons C. sensory neurons, interneurons, motor neurons D. interneurons, sensory neurons, motor neurons E. motor neurons, interneurons, sensory neurons
Site-specific recombination occurs between homologous sequences of DNA
Indicate whether the statement is true or false
Fill in the blanks to complete the following statements. ? When a substance or organism is structurally altered it has been ____________, which usually results in its death
Fill in the blank(s) with correct word
What is commonly known as a pinworm and is most common in children
What will be an ideal response?