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Under the biological species concept, polyploidy is a major force in plant speciation. Why isn't polyploidy a major force in animal speciation?
Suppose that you are a scientist sequencing the genomes of organisms. You start two new projects, one sequencing the genome of an amoeba.
Enzymes use several types of catalytic mechanisms. differentiate between acid-base catalysis, covalent catalysis, and metal ion catalysis.
It was discovered that the replication of the ends of chromosomes was a problem due to the structure of DNA and the properties of enzymes used in the replication process.
Assume that the D and M genes are on the same chromosome, but they are separated by one hundred map units. You make the following cross: DM / dm x dm / dm.
A sample of butterflies contained 50 percent yellow-winged individuals and 50 percent black-winged individuals. In this species, wing color is determined by a single gene with two alleles.
An ER membrane protein that has an N-terminal signal sequence and a single stop transfer sequence will. Which of the following is NOT a possible target of proteins imported into the ER?
What would be the biological consequences if skin was comprised of simple squamous epithelia instead of stratified squamous tissue?
Calculate the standard free energy change for the conversion of D-glucose from alpha to beta form at 40 degrees C, if relative amount of alpha-glucose at this temperature is 36%.
Genetic variation is important in reproducing populations because it allows the population to adapt to changing environments. Those individuals who are genetically best adapted to an environment have a greater tendency to survive and reproduce.
While many microbes give a service to us, many are extremely dangerous. Thus far, we have reviewed many different microbes that produce a variety of diseases in body.
Discuss how insertion, deletion, and base substitution of nucleotides can have a significant impact on genes. Find three specific examples of ways in which a very small change in DNA
The secretory coil fills the lumen with a NaCl solution that is isotonic with the blood plasma. As this solution moves upward through the reabsorptive duct,
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