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A biologist at the Cal Academy of Science calls you one day to consult about a strange occurrence. She tells you that a hammerhead shark in their aquarium recently became pregnant and gave birth. This was the only hammerhead shark in the tank, and in fact this shark had never come in contact with another shark. She also tells you that the baby shark is only about half the size of a typical baby shark. How do you explain this unexpected birth? Shark use an XY sex determination system similar to mammals (males are XY and females are XX, and the sex determining factor is on the Y chromosome.) Would you predict the baby shark to have male or female characteristics? Explain your answer.
Fig trees in the New World tropics are often considered to be keystone species. Many species of fruit eating monkeys and birds depend on fig fruits as their primary food source during the dry season, when very few other trees are in fruit. What chang..
Explain the female gametophyte of a seed plant and discuss how is the angiosperm life cycle different from the moss life cycle?
The patient, at 10 weeks gestation, was admitted for severe dehydration due to hyperemesis gravidarum. The patient had glaucoma, and treatment with eye drops was continued during the patient's stay. She responded well to IV fluid hydration and a..
During the normalcardiac cycle, the arteria contract when they are directly stimulated by:
An object executing simple harmonic motion has a maximum speed of 4.6m/s and a maximum acceleration of 0.64m/s2
The United States has one of the lowest voter turnouts rates in the developed world. Over the past few years, several states have passed laws to make it easier to vote, while others have passed laws to make it harder. To make voting easier, stat..
Five pages are needed with works cited page. What is known about the Get pathway for membrane protein insertion? For Figure 1D, describe the experimental set-up and how the results indicate the Get3 can take Sec22 from Get4/5.
Describe the etiology, pathophysiology, and manifestations of pneumonia, tuberculosis, pulmonary hypertension, and cor pulmonale.
Compare what you know about the Earth's temperatures now versus then (65 million years ago) and to the animals now versus then. What kind of challenges do you think a warm- or cold-blooded dinosaur might face
What brain disorders or damages can happen if humans have no skull? How would the brain function without skull and bones? what is the hippocampus?
What is a keystone species? a. A species that is not common, but whose presence has a large impact on other species. b. A predator that is at the top of the food chain--meaning that nothing eats it.
What are the physical differences among the types of epithelial tissues you studied? (hint: this does not include the subtypes as well).
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