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What was early earth like 4 billion years ago
In terms of information the chromosome may be thought of as a very long double helix; during the mitotic DNA replication the duplicated chromosome is composed of two chromatids.
Daphnia have inducible defenses in response to chemical cues from a predatory midge including the production of thicker exoskeleton and head teeth.Some lakes with Daphnia have the predatory midge wh
What is the isoelectric point and net charge of Glutamine at pHs 2,5,7,9 and 10?
A patient is complaining of recent onset of muscle weakness in her right hand and arm that gets progressively worse throughout the day. Her right eyelid and the right side of her mouth also are droo
Why is blue-green algae a misnomer? what is a benift to a green pigmentation?
In progeny of the cross Aa Bb Cc x aa Bb cc, how many will be A_ B_ C_? How many different types of gametes can be produced by each parent?
Lamarck's theory of evolution, like others before, was a transformational theory, whereas Darwin's was a variational one. Why was this change in thinking so important?
In the evolution of Heros in the Skooks, we considered the case where the proportion of the H allele was initially quite low (0.5%); in that case we found that the Skook gene (i.e. allele) increases
If most of the individuals in a population are hawks and a not many are doves how will the proportion of doves change over time?
Using Ellman's reagent, find the number of cysteines in a protein that has a concentration of 30 mg/ml solution with a molecular weight of 15,000 Da. Data-- 0.1 ml of the protein was reacted with th
I know (and mainly, feel) that the movement in one direction isn't created by the same muscle as the movement in the opposite direction, e.g the Triceps ("front") and Biceps ("back").
I am familiar with the use of tag-SNPs in genome-wide association studies to identify gene loci involved in complex traits, but I keep seeing the term "conditional analysis" used without any explana
Do all human beings have a single oldest ancestor (a man and a woman), or were there were many ancestors at the same time at different places on earth?
Today, a presenter briefly mentioned that gene expression in sea urchins during development might be manipulated using VP16 and engrailed fusions.
I know how it gets converted because PR is more stable and when there is neither red or far red light PFR naturally converts to PR. But what is the point of it
I am trying to recognize a deer by its antlers or any other means. Elaborating: I was hoping to use their antlers to recognize them but I have heard that most deers shed their antlers every year so
In an experimental setting, it also seems like although beneficial point-mutations are much more rare than deleterious, they do exist. This would suggest that experimentally, organisms are not at a
I am conducting a biochemistry-related experiment and I have been unable to understand a step which is commonly performed. My aim in this step is to apply a PEG (Polyethylene glycol) silane layer.
For some reason the lab seems to have a problem with contamination every so often. It's virtually impossible to prevent bacteria, viruses, fungi, etc. from getting into the incubator every time you
I know that the ascending loop of Henle is impermeable to water and ions, and, by end of the ascending limb, the osmolarity of the tubular fluid is very low due to the active transport of ions out (
Identify the steps taken in the preparation of a bacterial smear to prevent contamination of the culture and yourself working with a bacterial smear?
I know that difference between different colors of light is difference between their wave length but I don't know what gives beautiful colors (like rainbow colors) to different wave length of obser
I was reading this paper related to use of gene expressions for predicting the drug response. I have this confusion, the paper has used PCA on the covariance matrix formed by the genes to get what i
Fungi and insects contain chitin, which is about 6% nitrogen. Can an animal - like me - make use of this as a nitrogen source to build proteins?