Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Biology Expert

EDIT to the problem below: I just realized that the various numbers of offspring add up to 9900, not 10,000, which is the supposed total. So for problem #2, I randomly added 100 to my recombinant numbers and got the answer, 30.1, which turned out to be correct.

But the same thing did not work for problem #1. Adding 100 to the recombinant numbers resulted in an answer of 1.2, which is not correct. Nor is the correct answer 1.1, which would make up the distance between 30.1 -- 29 (the distane from sp-cn minus the distance from px-cn.)

So here are my problems about this new twist: 1) Why would 100 offspring be left out of the various classes of offspring. How is this a reflection of what happens in real life experiments? 2) How do you know where to add the 100 offspring in and where not to? The distance between px-cn didn't need the extra 100. And the distance between sp-cn did. 3) And why isn't any of this working for the distance between px-sp?

Thank you!!

Hi. I can't figure out this problem:

Females heterozygous for the recessive second chromosome mutations pn, px, and sp are mated to a male homozygous for all three mutations. The offspring are:

px sp cn 1410
px sp + 3498
px + cn 1
px + + 11
+ sp cn 8
+ sp + 0 (none seen)
+ + cn 3483
+ + + 1489
-----
10,000 total

I correctly figured out that the middle gene is px.
I correctly figured out that the distance between
px-cn is 20 m.u.

But I can't seem to figure out 1) the distance between
px-sp or 2) the distance between sp-cn.

Here's what I'm doing:

First, I assigned the following types to the above listed classes, in the order that they are listed above:

SCO (single crossover)
P (parental)
DCO (double crossover)
SCO
SCO
DCO
P
SCO

1) To figure out the RF of px-sp: [(1 + 11 + 8 + 0) / 10,000] x 100 = 0.2 m.u.

1) To figure out the RF of sp-cn: [(1410 + 11 + 8 + 1489) / 10,000] x 100 = 29.18 m.u.

But neither one of those answers is correct.

Biology, Academics

  • Category:- Biology
  • Reference No.:- M928173

Have any Question? 


Related Questions in Biology

Dolly dolly and more dollyit all started with a sheep named

Dolly, Dolly, and More Dolly It all started with a sheep named Dolly. In the mid-1990s, scientists proved convincingly that after decades of trying, we could, indeed, clone mammals - and even possibly, human beings. Unsu ...

What arises from flask-shaped cylindrical structures known

What arises from flask-shaped cylindrical structures known as phialides?

With which archaic human species did some of the ancestors

With which archaic human species did some of the ancestors of modern Europeans interbreed during the past 100,000 years?

Bacterial cells have only one dna molecule which is double

Bacterial cells have only one DNA molecule, which is double stranded and is replicated in essentially the same fashion as in eukaryotes. Imagine that, following the techniques of other scientists studying DNA, you create ...

Prevention of disease through vaccinationchoose a

Prevention of Disease through Vaccination Choose a diseases/disorder that you learned about this week that can be prevented through vaccination.  Research the disease background including etiology, symptoms, treatment, a ...

1 describe the difference between a tumor suppressor gene a

1. Describe the difference between a tumor suppressor gene, a proto-oncogene, and an oncogene. Provide an example of each. 2. Cervical cancer is mainly caused by human papilloma viruses (HPVs). Explain how viruses contri ...

1 keeping in mind that lying is stressful what externally

1. Keeping in mind that lying is stressful, what externally detectable signs might a lie detector identify, assuming it reliability? 2. What would be the effect on the circulatory system if a person received a massive do ...

Discuss the similarities and differences between arteries

Discuss the similarities and differences between arteries, veins, and lymphatic vessels. Be sure to include size, tissue layers, and any other structural components.

One more as soon as possible if you can please thank youthe

One more, as soon as possible if you can please! Thank you The technical advances covered in Chapter 15 are creating a host of medical and moral issues that we will all have to confront. Briefly discuss the four major as ...

What is produced by fragmentation of the hyphae into their

What is produced by fragmentation of the hyphae into their component cells?

  • 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