Imagine you do a test cross between a purple-flowered pea plant having serrated leaves (a dominant trait) and a white-flowered pea plant having smooth edges. If the purple-flowered plant is heterozygous for both traits, the expected ratio in the offspring is 1 purple-serrated: 1 purple-smooth:1 white-serrated:1 white-smooth. Instead, you see […]

You are a biologist working in Montana when you find a fossil wedged between two ancient layers of sedimentary layers. What technique would be the best tool to use to find the age of the fossil?Answer1. Use the radioisotopes sandwiched into the two layers around the fossil to approximate the […]

Q1. A test tube contains starch, pancreatic amylase, and water. The buriet is negative. After 30 minutes, Benedict’s test is positive. What substance is present? Q2. Calcium levels in Mr. Gallariani’s blood are dropping to dangerously low levels. The hormone PTH is released and shortly blood calcium levels begin to […]

Assignment: Essay Choose one of the three reading selections from the list of topic choices below. The focus is on brief but important primary source material written by major authors. Read the selections as identified with each topic below. Write a three to four paragraph essay (250 words minimum) which […]