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Evidence indicate that oocyte maturation or germinal vesicles breakdown (GVBD) in amphibians is induced by progesterone in a time and doses dependent manner.
Hypothesis: progesterone is able to also induce GVBD in fish.
Experiment:
Materials: fish ovarian oocytes, progesterone (dissolved in EtOH) various doses (1; 10; 100 µg/ml), culture media, room temperature, culture time = 24Hr.
What are the controlled, dependent, and independent?
How would you design a controlled experiment?
What is/are the control group and experiment or test groups?
Which of the following is not a function of membrane proteins?
The fish are cold-blooded while the cows are warm-blooded. Explain, in terms of assimilation efficiency and production efficiency, why more people can be fed from the fish than the cows (assuming similar amounts of algae/grass).
Consider a population of 600 individuals, at Harfy Weinberg equilibrium. The two alleles in the population, B and b, cause two distinct phenotypes. Individuals who are BB or Bb are brown whereas individuals who are bb are yellow.
One strand of double-stranded DNA is mutated, changing all cytosines to uracils. After one round of replication of the mutated DNA strand, the melting temperature of the resulting DNA will
If you obtain an RF value of 45 percent in one experiment, what can you say about linkage? (The actual figures are 58, 52, 47, and 43 out of 200 progeny)
Why is the maintenance of homeostasis especially important during development of new humans within the bodies of their mothers? What can go wrong if specific homeostatic functions are disrupted?
Assume you are studying an enzyme in a large population of a newly discovered diploid plant. You have determined that there are four alleles for this enzyme.
Suppose you are taking a cruise from California to Hawaii. About halfway there, the ship begins to sink. You are able to board a lifeboat, but now you are floating in the ocean waiting to be rescued.
You are a neurologist and perform a patellar reflex on each side of the body in one of your patients. You notice that the left side reflex doesn't work. The patient can feel a gentle sweeping motion on the thigh in both legs, cannot voluntarily..
What does NOT occur when genes are linked?
A very large population of randomly-mating laboratory mice contains 40% red mice. Red coloring is caused by the double recessive genotype, "rr". Calculate allelic and genotypic frequencies for this population.
What is the basic theory of biological evolution and what evidence is there to support this theory? Describe the two scientific models for evolution.
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