What can you conclude about the gene(s) encoding VH and CH?

Recall that allelic forms of Ig constant regions exist. In the mouse, the locus encoding Ig heavy chain constant regions is named IgH. The inbred mouse strains BALB/c and C57BL/6 have different IgH alleles: BALB/c mice are IgHa and C57BL/6 mice are IgHb. They also differ in their humoral response to phosphorylcholine (PC). While ...continues

q2

2. The inbred mouse strains BALB/c and C57BL have different Ig heavy chain allotypes: The BALB/c allele is IgHa, whereas the C57BL allele is IgHb. C57BL mice make good immune responses to the antigen "Z", but BALB/c mice respond poorly. Assume you produced (BALB/c X C57Bl)F1 mice, then back-crossed these F1s to BALB/c. You te ...continues

Importance of Water

Life exists on Earth because of water. How does water contribute to the fitness of Earth to sustain life?

Ecosystem

1. What is an ecosystem? 2. What is ecology? 3. What are abiotic factors in the ecosystem? 4. What are biotic factors in the ecosystem? 5. Describe these types of organisms found in the ecosystem. Give an example of each a. producers b. herbivores c. carnivores d. omnivores e. ...continues

Prokaryotic and eukaryotic cells

Prokaryotic and eukaryotic cells share many similar features, developed and fine-tuned through years of evolution. Interestingly, the majority of prokaryotic cells exist as simple unicellular organisms, and only on rare occasions can grow together in colonies or demonstrate any type of intercellular communication. Eukaryotic cel ...continues

Choose two organisms that interact with each other, such as bees and flowers, or consider the effect of any environmental factor on an organism, such as light, sound, air quality, food preference, or nutrient quantity or quality.

For this assignment, choose two organisms that interact with each other, such as bees and flowers, or consider the effect of any environmental factor on an organism, such as light, sound, air quality, food preference, or nutrient quantity or quality . Now form a simple hypothesis about this interaction. Include the observati ...continues

Evolution of antibiotic resistance

The evolution of antibiotic resistance in bacterial populations is a direct consequence of natural selection applied by widespread use of antibiotic drugs. When a new antibiotic is first introduced, it kills the vast majority of bacteria exposed to it. The surviving bacterial cells, however, may include individuals whose genomes ...continues

What are the components of our immune system involved in allergic reactions, and how does treatment of allergies manage to control them? Create a brochure designed to explain the causes of allergies and tips for allergy management to a non-scientific audience.

Many of the most devastating human diseases result from an attack of various microbes (viruses, bacteria, fungi) on the human body. The flu epidemic of 1918 killed 22 million Americans and Europeans in just 18 months, and our ongoing war against the HIV virus is still waging. In order to fight against this onslaught, the human b ...continues

How biotechnology is used today

Biotechnology allows us to use living organisms or their processes for human needs or purposes. Research how biotechnology is used today. Describe one use of biotechnology, answering the following questions: What biotechnology application did you choose? Briefly describe this process or application. What benefits are ...continues

Determining probability of inheriting disease gene

Part I: Imagine you have a friend who is getting married and plans on starting a family right away. She asks your advice about preconception genetic screening because she is concerned about the chance that her future children could have cystic fibrosis. Her fiancé has a sister that has cystic fibrosis, and she has a cousin who ...continues