Preview

Genetics

Satisfactory Essays
Open Document
Open Document
272 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Genetics
a) Round Yellow (RRYY) and wrinkled green (rryy)

The cross between them

RY
RY
RY
RY
ry
RrYy
RrYy
RrYy
RrYy ry RrYy
RrYy
RrYy
RrYy
ry
RrYy
RrYy
RrYy
RrYy ry RrYy
RrYy
RrYy
RrYy

So all the progeny are Round, Yellow with the genotype RrYy (F1 plants)
Now for the F2 generation,
RrYy is mated with itself (RrYy)

RY
Ry
rY ry RY
RRYY
RRYy
RrYY
RrYy
Ry
RRYy
RRyy
RrYy
Rryy
rY
RrYY
RrYy rrYY rrYy ry RrYy
Rryy
rrYy rryy Therefore, the genotypic ratio is: RRYY: RRYy: RRyy: RrYY: RrYy: rrYY:Rryy:rrYy:rryy = 1:2:1:2:4:1:2:2:1

And…

Phenotypic ratio = Round Yellow: Round Green: Wrinkled Yellow: Wrinkled Green = 9:3:3:1 b) Now the actual number of plants seen upon crossing RrYy with rryy is:
Round yellow - 445
Round green - 48
Wrinkled yellow - 52
Wrinkled green – 455

RY
Ry
rY ry ry
RrYy
Rryy rrYy rryy ry RrYy
Rryy
rrYy rryy ry
RrYy
Rryy rrYy rryy ry RrYy
Rryy
rrYy rryy Where as the ratio should ideally be 1:1:1:1. So as follows: - Parental types - Round Yellow (RrYy) and Wrinkled green (rryy) - Recombinant types - Round Green (Rryy) and Wrinkled Yellow (rrYy) c)Recombinant frequency = Number of recombinants / Total = 0.1 = 10% recombination d) Map distance = recombination frequency = 10 cM

e) R = 0.1 Then, the gamete frequencies are RY – ½ -1/2( r)
Ry – ½(r) rY - ½(r) ry – ½ - ½ (r) Therefore; RRYY - 1/4 - 1/2(r) + 1/4(r^2) = 0.2025
RRYy - 1/2(r) - 1/2(r^2) = 0.045
RRyy - 1/4(r^2) = 0.0025
RrYY - 1/2(r) - 1/2(r^2) = 0.045
RrYy - 1/2 - r + r^2 = 0.41
Rryy - 1/2(r) - 1/2(r^2) = 0.045 rrYY - 1/4(r^2) = 0.0025 rrYy - 1/2(r) - 1/2(r^2) = 0.045 rryy - 1/4 - 1/2(r) + 1/4(r^2) = 0.2025 Thus the overall modified phenotypic ratio will be: 202.5 : 45 : 2.5 : 410 : 45: 2.5: 45 : 202.5 = 81: 18: 1: 164: 18: 1 :18: 81
Continue Reading
View Writing Issues

You May Also Find These Documents Helpful

  • Good Essays

    PCB 3063: Study Guide
    • 1647 Words
    • 7 Pages

    PCB 3063: Study Guide

    Another gene has a recessive allele w that results in waxy starch, as opposed to normal starch (W). The two genes segregate independently. What are the phenotypes and relative frequencies of offspring from each of the following crosses?…

    • 1647 Words
    • 7 Pages
    Good Essays
    Read More
  • Satisfactory Essays

    BOT 1010 Exam 3 Genetics 1

    • 306 Words
    • 3 Pages

    BOT 1010 Exam 3 Genetics 1

    g. The nucleic acid which picks up amino acids in the cytoplasm and then takes them to…

    • 306 Words
    • 3 Pages
    Satisfactory Essays
    Read More
  • Satisfactory Essays

    Chapter 14 15 Test Corrections
    • 495 Words
    • 1 Page

    Chapter 14 15 Test Corrections

    4.) The individual with genotype AaBbCCDdEE can make many kinds of gametes. Which of the following is the major reason?…

    • 495 Words
    • 1 Page
    Satisfactory Essays
    Read More
  • Satisfactory Essays

    Chuco Bueno y Claro Valdes El rey de la historia
    • 1857 Words
    • 9 Pages

    Chuco Bueno y Claro Valdes El rey de la historia

    varieties; these were crossed to produce the first filial or F1 generation. The F1s were, then,…

    • 1857 Words
    • 9 Pages
    Satisfactory Essays
    Read More
  • Better Essays

    Population Genetics
    • 1551 Words
    • 7 Pages

    Population Genetics

    The microevolution of Alu element TPA-25 was tested in the experiment through the examination, observation, and analysis of population alleles distribution under the Hardy-Weinberg Theory of Genetic Equilibrium. Alu elements affect the genome by causing insertion mutations, recombination between elements, gene conversion, and alterations in gene expression. In the lab PCR was used to amplify a short piece of DNA from human genome which allowed us to look for a DNA sequence called an Alu element. Electrophoresis was used to separate DNA fragments of different sizes. The data indicated that the most individuals had the Alu element TPA-25. According to the results x2 was 1.842 because number of homozygous AA individuals without Alu insertion was 5, number of homozygous BB individuals with Alu element was 22 and heterozygous AB individuals were 13. I failed to reject my hypothesis because the p value was greater then 0.5 and less then 0.1.…

    • 1551 Words
    • 7 Pages
    Better Essays
    Read More
  • Satisfactory Essays

    Evolutionary
    • 670 Words
    • 2 Pages

    Evolutionary

    For this scientific argument, the research question was Which of these mammals are the most closely related? At first, my claim had stated “The mammals with more similar traights and characteristics were the ones that were the most closely related.” As my group and I looked deeper into the data, we had analyzed the different mammals and ended up with a final claim which was “The elk, cow, Caribou, the Pallid bat, and big eared bat are the most closely related.”…

    • 670 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Good Essays

    Genetics and Genomics
    • 989 Words
    • 4 Pages

    Genetics and Genomics

    1. One patient has a grade I tumor of the lung, while another patient has a grade IV tumor of the lung. Explain how tumors in various stages are similar and how they differ. (1 point)…

    • 989 Words
    • 4 Pages
    Good Essays
    Read More
  • Good Essays

    Natural Selection
    • 497 Words
    • 2 Pages

    Natural Selection

    Variation- Variation is when the offspring in each generation have a slight difference between them physically. Differences within the traits among individual of a species is called a variation. For example, one offspring might have a thicker coat of fur than a different offspring.…

    • 497 Words
    • 2 Pages
    Good Essays
    Read More
  • Good Essays

    Mister
    • 1008 Words
    • 6 Pages

    Mister

    log (rentit) = β0 + β1*log (popit) + β2*log (avgincit) + β3*pctstuit + δ*y90t + αi +uit…

    • 1008 Words
    • 6 Pages
    Good Essays
    Read More
  • Good Essays

    Sexual Selection
    • 1148 Words
    • 5 Pages

    Sexual Selection

    Sexual selection was an idea proposed by Darwin and refers to the process in which males and females attempt to maximize their chances of reproductive success. Within a species there are certain characteristics that make individuals attractive to potential mates. An example of this is in peacocks, female peacocks are attracted to males with long brightly colored tails, even though this makes them easier to be spotted by predators. This characteristic then evolves within the species due to how males with this characteristic have a higher chance of reproductive success and their characteristics being passed on to surviving offspring.…

    • 1148 Words
    • 5 Pages
    Good Essays
    Read More
  • Powerful Essays

    Human Genetic Modofication
    • 69865 Words
    • 280 Pages

    Human Genetic Modofication

    Basel · Freiburg · Paris · London · New York · Bangalore · Bangkok · Shanghai · Singapore · Tokyo · Sydney…

    • 69865 Words
    • 280 Pages
    Powerful Essays
    Read More
  • Satisfactory Essays

    Genorosity
    • 285 Words
    • 2 Pages

    Genorosity

    Having the characteristic generosity can take you very far throughout your life. Generosity is having the habit of giving without expecting anything in return. This quality is very important to have and can give you such a good feeling. It makes you feel like there is actually good in the world and that just you doing a simple task can actually make a big difference.…

    • 285 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Good Essays

    Genetic Counseling
    • 284 Words
    • 2 Pages

    Genetic Counseling

    In my opinion, I think that Jenny and Bob Miller should take the necessary risks in order to make their sons life more comfortable and possibly cure them of their disease in the near future due to gene therapy. The gene therapy is not far from being a reality in medicine that can cure muscular dystrophy, and the injections of normal muscle cells from healthy individuals can relieve some of the pain they are experiencing until a cure is generated. Muscular dystrophy is a very painful disease and anything and everything should be done to help the individuals who suffer from this disease. Jenny and Bob Miller are a wealthy couple and have enough money to afford the injections for their children. Immunological rejection is a possibility that comes with the injection of healthy muscle cells, but this risk is worth taking because without the injections of muscle cells the children may die before the cure for muscular dystrophy can be created. These children will not live as long as they possibly could without the muscular injections that will keep them alive long enough for the cure for muscular dystrophy to be invented. Saving a life is always worth the risk. Even if the children’s bodies reject the new muscle tissue, they will be no worse off than they would have been without the injections. With the injections, the children will have a chance to live a more normal life than they ever would have been able to without medical help. Gene therapy is the ultimate cure, but unless the injections are allowed to commence the children will not live long enough to see the cure for muscular…

    • 284 Words
    • 2 Pages
    Good Essays
    Read More
  • Better Essays

    The Importance of Genetic Studies
    • 1135 Words
    • 5 Pages

    The Importance of Genetic Studies

    A genetic study can often assist in making a critical management decision or preparing an effective restoration or management plan. However, whether the genetic study is a quick assessment of samples of plant material, or a longer-term and more elaborate project, attention to some basic principles can mean the difference between acquiring useful information or simply wasting time and other resources. Before commencing any genetic study or investigation, three issues should be addressed:…

    • 1135 Words
    • 5 Pages
    Better Essays
    Read More
  • Good Essays

    The Education Is More Important Than Gene
    • 631 Words
    • 3 Pages

    The Education Is More Important Than Gene

    Why the people have different life in the world? People are the same when they born, and then why they have different ways in their life? Some people become successful man or woman, the others become criminal, or most of people become the regular. I think the education is the most important part. In this essay, the education includes the education from school and education from around. Everybody goes to school, when they are the age to study. Education for everybody is very important. It is decide a person who can become a good one or the bad one.…

    • 631 Words
    • 3 Pages
    Good Essays
    Read More

Related Topics