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Altering the Genetic Code: Mutations
Single nucleotide changes (point mutations) in the sequence of a gene can result in changes in the amino acid sequence of a protein produced from the mutated gene. One of the most well studied examples of the effects of a mutation on the sequence of a protein involves the oxygen-transporting protein hemoglobin. A mutation creates an altered form of hemoglobin that produces the genetic disorder called sickle-cell disease (sickle-cell anemia). You will learn more about hemoglobin and the effects of mutations in the hemoglobin gene in HemoglobinLab. The purpose of the following assignment is to demonstrate the effect of a point mutation on the amino acid sequence of a protein.
At 4:00 p.m a closed flask of sterile broth is inoculated with 10,000 cells. The lag phase lasts 1 hour. At 9:00 p.pm the culture enters stationary phase with a population of 65 million cells. At what time is the population half maximal? ( SHOW YO..
Imagine you are an ecologist, and you do a census of all of the animal species within a particular ecosystem. You discover that the total combined populations of the tertiary consumer species in the ecosystem are a lot smaller than the combined total..
If there are only 2 possible alleles for a particular gene, how many bands would show on a gel for a homozygote? How many for a heterozygote?
A series of gas mixtures is inhaled by a healthy subject. Which one of the following gases would diffuse most slowly from the lungs into the blood? A) CO2 at PCO2 of 60 mmHg B) CO at PCO2 of 0.5 mmHg C) O2 at PO2 of 130 mmHg D) O2 at PO2 of 150 mm..
What is a fundamental difference between mitosis and meiosis?
q1. why will someone suffering from hyponatremia a deficiency of sodium ions in blood suffer from neurological symptoms
Black coat of animal is dominant; white is the alternative recessive. While true-breeding black is crossed to true-breeding white, what is the possibility that a black F2 is heterozygous.
Suppose that each excitatory presynaptic neuron causes a 0.5mv depolarization of postsynaptic neuron, and each inhibitory presynaptic neuron causes a 0.5mv hyperpolarization of postsynaptic neuron.
Based on what we have learned this term about cell function and homeostasis, explain why acid rain is so damaging to plants, such as the radish. How is it that some plants have developed a tolerance to low pH conditions? Be sure to cite source(s) ..
Which of the following peptide sequences is likely alpha helical structure?
An important group of peripheral membrane proteins are enzymes such as the phospholipases that cleave the head groups of phospholipids. What properties must these enzymes exhibit?
Why is the human Y chromosome a marker for only the paternal, not the maternal, human genetic lineage? Please provide a detailed, complete explanation. Also if your answer utilizes reference materials please site the source.
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