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Q1. The Dorsal expression is maximum in the ventral part of the embryo and is responsible for directing the differentiation of cells in that region toward ventral fates. Why then is the gene called Dorsal, and not, for instance, Ventral?
Q2. The density of Douglas firs in an old-growth forest is estimated by counting Douglas firs in four sample plots of one hectare each. The number of fir trees in the plots is 10, 12, 7, and 11, respectively. What is estimated density of firs in the forest?
Describe some of the physiological changes that happen to the cell membranes of a rainbow trout as it acclimatizes to cold, water at 4 degrees Celsius, after living at 16 degrees Celsius for a long time?
In the turtles, brown shells and red legs are most prevalent forms of traits. Occassionally green shells and yellow legs are observed.
Predict and explain the effect on GAL1 transcription, in the presence of galactose alone, of the following mutations.
a certain type of crab tends to be larger in a local bay than in the open water outside the bay. What hypotheses might account for this difference? HOW would you go about testing these hypotheses?
The various parts of the endomembrane system serve different functions in the cell. In this activity, you will identify the roles of each part of the endomembrane system.
Discuss the economic/health impact of any one species of harmful water molds. What is the effect of increase temperature on a non enzyme catalyzed reaction?
A seven cm potato sliced is placed into an unknown solution. After the slice is immersed for one hour, the potato slice now measures six cm.
Starch can be hydrolyzed to glucose. Draw the basic chemical mechanism for starch hydrolysis, Glycogen is phosphorytically cleaved to glucose
32P is an unstable isotope of phosphorus that has a half-life of 14.29 days. Atoms of this isotope undergo beta decay in which a neutron decays into a proton and an electron.
You receive a set of pregnant brown mice. You know that the mothers are doubly heterozygous (heterozygous at both the coat color and albinism loci) and that the fathers were albino.
Does anyone know how to calculate Enzyme rate? I have an AP Biology test and most of the graphs ask this type of question. Thanks!
If populations are sustaining growth at r = 0.088 and the population in 2001 is 3000 individuals, in what year would snow geese be taken off an endangered species list.
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