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1. Jake told his girlfriend that the rollercoaster did not bother him, but during the ride he let loose with a long, high-pitched scream. Explain how the muscles of respiration, the muscles that control vocal cords, and the muscles that move the epiglottis produced Jake’s scream. 2. Explain what happens to the […]

In humans color vision depends on genes encoding three pigments.The R (red pigment) and G (green pigment) genes are on the Xchromosome, whereas the B (blue pigment) gene is autosomal. Amutation in anyone of these genes can cause colour blindness.Suppose that a color-blind man married a woman with normal colorvision. […]

Consider a culture into which two E. coli strains are inoculated. Strain A is normal with g=21 min at 37 degrees C, and 42 mins at 27 degrees C. Strain B has a temperature-sensitive mutation, such that g=55 mins at 37 degrees C, and 39 mins at 27 degrees C. […]

Suppose that every human gamete contains approximately 40,000 genes. a. If the forward mutation rate is 1 x 10-5 new mutations per gene per generation, what is the average number of new mutations per gamete per generation? Show your work. b. What is the average number of new mutations per […]