How does crossing over introduce variability in the daughter cells? Where does mitosis occur in the skin? The gene for cystic fibrosis is located on chromosome 7. If we remove the second polar body from a recently fertilized oocyte, how many copies ...
The number of cells increases exponentially and can be expressed as 2n, wherenis the number of generations. If cells divide every 30 minutes, after 24 hours, 48 divisions would have taken place. If we apply the formula 2n, wherenis equal to 48, the single cell would give rise to 248or ...
You can get chemotherapy in many different ways. Some are: Intravenous (IV).The chemotherapy goes directly into a vein. You might get it through a tube in your arm or a device in your chest. Injection.The drugs are delivered with a shot directly into the muscle in your hip, thigh, or...
If there were two divisions per day but one cell always died, we would expect three individuals from each single individual and Equation 1 would be N(t) = 3tN(0). So the division rate could be any number at all and the general equation becomes, where R is usually called the fi...
Key to the finding is something called chromosomal instability, found in about half of breast cancers and caused by errors that take place when cells improperly divide. Almost all cells in the body divide. This is how organisms grow and adapt. During that process, called mitosis, the original...
guanine exchange factors (GEF-H1) put the brakes on endomitosis. They found that without GEF-H1, nuclear DNA couldn't go from two internal nuclei to four. Additional divisions of nuclear DNA within the cell could not take place unless there was decreased expression of a second factor, ECT2...