Three questions on various genetics topics.
Not what you're looking for?
1. Two mothers give birth to sons at the same time in a busy urban hospital. The son
of couple #1 is afflicted with hemophilia A. Neither parent has the disease. Couple #2 has a normal son despite the fact that the father has hemophilia A. The two couples sue the hospital in court claiming that a careless doctor swapped their babies at birth. You appear in court as an expert witness. What do you tell the jury? Make a diagram(s) that you can submit to the jury.
2. Meiosis results in a reassortment of maternal and paternal chromosomes. If 2n =6 for a given organism. (a) What are the possible numbers of different combinations of paternal and maternal chromosomes. (b) If no crossing over occurs, what is the probability that a gamete will receive only paternal chromosomes?
3. You are interested in using bacteria to bioremediation at an old chemical plant and convert toxic compounds toluene and benzene into harmless compounds. You discover bacteria that are able to tolerate high levels of toluene and benzene, and you suspect that this is due to the ability of the bacteria to break these compounds into less-toxic products. If this true, these toluene- and benzene-resistant strains will be valuable for cleaning up toxic sites. (a) How could you find out whether these bacteria are metabolizing toluene as a source of carbon compounds? (b) Assuming that the bacteria do have an enzymatic pathway to break down toluene, would you predict that genes involved are constitutively expressed under positive control or under negative control? WHY?
Purchase this Solution
Solution Summary
In this solution, I discuss three genetics questions: one on a possible baby-switching at a hospital, one on meiosis, and one on gene regulation in bacteria.
1. Two mothers give birth to sons at the same time in a busy urban hospital. The son
of couple #1 is afflicted with hemophilia A. Neither parent has the disease. Couple #2 has a normal son despite the fact that the father has hemophilia A. The two couples sue the hospital in court claiming that a careless doctor swapped their babies at birth. You appear in court as an expert witness. What do you tell the jury? Make a diagram(s) that you can submit to the jury.
2. Meiosis results in a reassortment of maternal and paternal chromosomes. If 2n =6 for a given organism. (a) What are the possible numbers of different combinations of paternal and maternal chromosomes. (b) If no crossing over occurs, what is the probability that a gamete will receive only paternal chromosomes?
3. You are interested in using bacteria to bioremediation at an old chemical plant and convert toxic compounds toluene and benzene into harmless compounds. You discover bacteria that are able to tolerate high levels of toluene and benzene, and you suspect that this is due to the ability of the bacteria to break these compounds into less-toxic products. If this true, these toluene- and benzene-resistant strains will be valuable for cleaning up toxic sites. (a) How could you find out whether these bacteria are metabolizing toluene as a source of carbon compounds? (b) Assuming that the bacteria do have an enzymatic pathway to break down toluene, would you predict that genes involved are constitutively expressed under positive control or under negative control? WHY?
Solution Preview
In this solution, I discuss three genetics questions: one on a ...
Purchase this Solution
Free BrainMass Quizzes
Understanding the Musculoskeletal system
Introduce and understand basic information how the skeletal system and muscular system work in close concert with one another. And how their interaction between muscle and bone, as they work together to allow us movement.
Breast Milk and Breastfeeding
How much do you know about breast milk and breastfeeding? Double check your knowledge level with this quiz!
Biochemistry Basics
A refresher quiz to test your knowledge of basics concepts of biochemistry.
Basic Immunology Quiz
Intro to immuno quiz. Covers the basics of immunology and recognition of foreign substances by the body.
How Much Do You Know About Genetic Inheritance?
Most of us studied the basics of dominant and recessive genes at some point. However, genetics are much more complicated than this. How far beyond the basics does your knowledge go?