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Q. 1. Explain three things that a paleontologist must do to plan a fossil hunting expedition so that he is likely to find evidence to reply a specific scientific question. For each of these three things, illustrate why it is important to the success of the study.
2. Hox genes direct the development of an animal, helping to determine the animal's body plan. Describe how Hox genes also show proof that all animals share a common ancestry?
3. Elucidate why complex multicellular animal bodies did not arise until around 600 million years ago.
Kangaroo rats native to North American deserts have very efficient kidneys. They excrete an exceedingly small volume of highly-concentrated urine in order not to lose much water from the bodies.
Briefly explain how a complement fixation test is used to determine the etiological agent of a disease or in other words whatdoes this test tell us about the patient.
What are characteristics of populations using exponential (r) and logistic (k) reproductive strategies?
The classic "beads-on-a-string" structure is the most decondensed chromatin structure possible and is produced experimentally. Which chromatin components are not retained when this structure is generated? Explain.
You have been asked to study two recently discovered fish species, both found in waters off a small island. The two species are very similar in general structure, but there are two key differences between them. In species A, the males are brightly pa..
A woman whose father is color blind possess one eye with normal color vision anmd one eye with color blindness. Propose an explanation for this woman's vision pattern.
assume the population is in hardy weinberg equilibrium.
1. The duck-billed platypus and other monotremes differ from other mammals in that they? a. are aquatic. b. have mammary glands. c. lay eggs. d. have hair.
Blebbistatin is a newly identified small molecule inhibitor of myosin heavy chain. It binds to myosin-ADP-Pi complex with high affinity. What step of cross bridge function is affected?
Cellulose can provide a widely available and cheap form of glucose, but humans cannot digest it.
In the dark reaction, plant cells can fix CO2 into glycealdehyde-3-phosphate (G3P) in the stroma of chloroplasts, then into glucose or sucrose (sugar) in cytoplasm.
Think about the reaction from the electron transport chain in the mitochondria. Only consider the forward direction the reaction from left to right
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