Explore BrainMass
Share

Three questions on various genetics topics.

This content was STOLEN from BrainMass.com - View the original, and get the already-completed solution here!

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?

© BrainMass Inc. brainmass.com October 25, 2018, 3:57 am ad1c9bdddf
https://brainmass.com/biology/genetics/360830

Solution Preview

In this solution, I discuss three genetics questions: one on a ...

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?

$2.19
See Also This Related BrainMass Solution

Critical thinking: Discuss types of fallacies represented in ten mulitple choice questions.

Choose the best fallacy, if there is one, for the following statement: "There must be life on other planets. Imagine how lonely we'll find the universe if we discover that we're the only ones here."

No fallacy
Argument from force
Wishful thinking
Subjectivism

Which fallacy is at work in the following statement? "Before you go getting all excited about the ancient Greek ideal of leisure and learning, remember that it was built on the backs of slaves. How do you think they liked the sight of all those philosophers? Not much."

Poisoning the well
Genetic fallacy
Slippery slope
Begging the question

Choose the best fallacy, if there is one, for the following statement: "I'm a disabled Vietnam veteran. Why can I only get a six-month license to sell pretzels from my pushcart? You have to be a foreigner with a Green Card to make a living in this country."

No fallacy
Arguments from both outrage and pity
Rationalizing
Two wrongs make a right

Which fallacy is at work in the following? statement "I beg to differ, Officer, but sometimes you people go overboard talking about the dangers of fast driving. If you can prove that there's actually a child near the street right now, and that the child would have stepped out in front of my car, then I'll grant you that going fifty-five was dangerous."

False dilemma
Slippery slope
Begging the question
Burden of proof

Choose the best fallacy, if there is one, for the following statement: "My opponent would like to see TV networks label their programming, on the grounds that violent shows make children who watch them violent, but everyone knows a couple of shows can't change your personality."

No fallacy
Two wrongs make a right
Group think fallacy
Argument from popularity

Which fallacy is at work in the following statement? "Tomorrow night you will watch my opponent on these same channels. He'll try to defend all the exhausted ideas that have landed this state in the gutter. You wait; he'll pretend he's saying something new. But that's the way it goes in politics, and I'll let him make his little speech. Freedom of choice is what America is all about."

Circumstantial ad hominem
Burden of proof
Begging the question
Poisoning the well

Choose the best fallacy, if there is one, for the following statement: "Ladies and gentlemen of the jury, my client stands before you accused of three bank robberies, but the prosecution has not told you about the three little children in this story who will have a hard time getting food on their table if their daddy goes to prison."

No fallacy
Argument from pity
Argument from popularity
Rationalizing

Which fallacy is at work in the following statement? "You should bathe three times a day in a tub of whole milk to keep your skin looking young. No one has ever proved that it doesn't work."

Genetic fallacy
Slippery slope
Appeal to ignorance
Line-drawing fallacy

Which fallacy is at work in the following statement? Letter to the editor: "Now the Dallas Police have dismissed the rape charges against Michael Irvin and Erik Williams. Excuse me if I'm suspicious of the Dallas Police Department. I'm old enough to remember Lee Harvey Oswald being shot to death with the Dallas Police escorting him."

Poisoning the well
Genetic fallacy
Burden of proof
Perfectionist fallacy

Which fallacy is at work in the following statement? "Ms. Turnier gave me extra homework for running in class. She has a rule against it, but I told her, 'I wasn't running, I was walking. One foot was in front of the other.' Maybe I went fast, but where is it in her book of rules that suddenly that's running?"

Line-drawing fallacy
Poisoning the well
Slippery slope
Begging the question

View Full Posting Details