Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Biology Expert

One thing biologists do in order to determine how a cell or organism works is to find a mutant that does not do the activity. They go on a mutant hunt! Because it can take a long time, biologists speed up the process by using mutagens-often chemicals or radiation.

When mutation are introduced by mutagens, some cells are killed and some of the survivors are mutated.

If 1 million Neurospora spores are exposed to X-rays (2000r/min for 18 min), 84% of the spores are killed, and of the survivors, 259 evidence mutation. If P is the probability of a mutant spore, the probability of a nonmutant spore is q=1-p. so, in a large sample of n spores, the probability of no mutants is q to the n (qn). the probability of at least one being mutant is 1-qn.

a) what percentage of the surviving spores evidence mutation?

b) How many of the surviving spores would you need to check to be 90% certain of finding at least one mutant? (Hint: what is the value of q and use log10 to solve for n)

Biology, Academics

  • Category:- Biology
  • Reference No.:- M943794

Have any Question? 


Related Questions in Biology

What percentage of the dna changes that occur and one cell

What percentage of the DNA changes that occur and one cell in one year escape the proofreading and repair process calculate this in both cases: if one mutation accumulates in one sale per year and if five mutations accum ...

How do energy and nutrients move through ecosystems

How do energy and nutrients move through ecosystems? Indicate whether each is recycled. Define trophic levels and explain their involvement/role in energy movement.

What releases prothrombin which helps in clotting of

What releases prothrombin which helps in clotting of blood?

Two adjacent filaments of spirogyra affins each 10 cells

Two adjacent filaments of spirogyra affins each 10 cells participating in reproduction. How many new Spirogyra plants are produced during sexual reproduction?

Two immune system questionsactivated t-helper cells aid in

Two immune system questions: Activated T-helper cells aid in humoral immune responses by releasing cytokines which promote antibody production, phagocytosis, neutralization and apoptosis. Which parts of this statement ar ...

You have formulated a hypothesis mangoes contain more

You have formulated a hypothesis: "Mangoes contain more vitamin C than oranges." To test this hypothesis you measure vitamin C levels in 20 oranges and 20 mangoes from trees that were grown in the same orchard under the ...

Explain how resource partitioning led to character

Explain how resource partitioning led to character displacement in the interactions between the benthic and limnetic sticklebacks in Paxton Lake.

What does ph measure how do these measurements vary between

What does pH measure? How do these measurements vary between acids and bases? How do buffers work, in terms of pH? In terms of your body, are there varying levels of pH? If so, why is this?

Concerning a patient with autonomic dysreflexiawith what

Concerning a patient with autonomic dysreflexia: With what you know of the etiology for the hypertension, was labetalol a good choice for managing the blood pressure? Why or why not? If not, what other kind of drug do yo ...

One major trend in the world today is green technology

One major trend in the world today is "green technology". Green technology is basically a term to encompass environmentally friendly technologies and inventions. Topic:  In this discussion board provide us with a link to ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen