1- I would like from you to write a report containing abstract, introduction, results, discussion, conclusion and references. 2- It is VERY VERY important to read the uploaded files. 3- When it comes...

1 answer below »
1- I would like from you to write a report containing abstract, introduction, results, discussion, conclusion and references.
2- It is VERY VERY important to read the uploaded files.
3- When it comes to working out the expected numbers for your Chi-square test, use the total number of flies counted for the relevant categories, and from that, work out what number would be expected if the flies came in the proportions stated in your null hypothesis.
The Chi-square test only needs to be done on males OR females, not on both sexes. The number of relevant categories are different for males and females, so this means that your degrees of freedom will be different when looking up the Chi-square value in the table. As females had some categories with a zero expectation, we shall simply ignore them for the test and only work with TWO expected categories (thus ONE degree of freedom), while for the males, we have four expected categories and thus THREE degrees of freedom.5- i want you just to write about FEMALE GENETICS because in this report you have to choose one gander


Document Preview:

2013 Class results for Drosophila melanogaster F2 generation (from a original cross of a white-eyed male with a vestigial winged female). MALESFEMALESNormal wings Red eyesNormal wings White eyesVestigial wings Red eyesVestigial wings White eyesNormal wings Red eyesNormal wings White eyesVestigial wings Red eyesVestigial wings White eyes Monday am189731501101112511503011650600013211000012830150405125112080926212040445114440763013080460090209440171207640403047001245091308100 Monday pm5820150401173072305220201805231404013413130This document was truncated here because it was created in the Evaluation Mode.



Answered Same DayDec 23, 2021

Answer To: 1- I would like from you to write a report containing abstract, introduction, results, discussion,...

David answered on Dec 23 2021
121 Votes
Abstract
The aim of the experiment was to test a genetic hypothesis by crossing Drosophila and
studying two of its traits viz. Wing type and Eye colour. A chi square test has been used to
test the genetic hypothesis about the phenotypic ratio of
F2 generation of female
Drosophila i.e. The expected ratio is 6:0:2:0. The Hypothesis was not rejected, so we may
conclude that the observed ratio was very close to the expected ration and hence the
genetic hypothesis was true.
Introduction
Genetics is the study of Heredity. Heredity is a Biological Process where a parent passes
certain genes onto their children or offspring. Genetics is the science of variation in living
organisms. Modern Genetics started with Gregor Johann Mendel, who studied the nature of
inheritance in plants. He established two basic laws: Mendel’s Law of Segregation and Law
of Independent Assortment.
Drosophila melanogaster, the common fruit fly, has been used for genetic experiments since
T.H. Morgan started hi experiments in 1907. Drosophila make good genetic specimens and
are popular for its use in studying genetics because of its small size, short life cycle,
fecundity i.e. a female may lay hundreds of fertilized eggs during her brief life span thus
making statistical analysis easy and reliable. Two characteristics viz. Wing type and eye
colour are being studied. In this practical, a wild type (normal wings) and a mutant type
(vestigial wing/ white eyed) are cross bred to study a genetic hypothesis about the
phenotypic ratio of the second filial generation of female Drosophila.
Results
Symbols used are as follows:
VG: allele for vestigial wing (recessive).
+vg: allele for normal wing (dominant).
: allele for normal (red) eyes (dominant).
: allele on the X-chromosome for white eyes (recessive).
Various Genotypes and Phenotypes in different generations are as follows:
GENOTYPES PHENOTYPES
P: ( Y +vg+vg) x VG VG) White males x vestigial females
F1: ( +vg+vg) x ( +vg+vg) White females x wild males
F2: ( VGVG) / ( +vgVG) / ( Y VGVG) /
( Y+vgVG) / ( Y +vgVG) / ( Y VGVG)
Vestigial females/ wild females/
wild males/ vestigial males/
white males/ white vestigial
males
Note: Class Results for F2 generation for Year 2011, 2012 and 2013 are given in Appendix
1.1.
Let us formulate our genetic hypothesis as follows:
H0: The ratio of observed frequencies of different phenotypes of female drosophila in F2
generation...
SOLUTION.PDF

Answer To This Question Is Available To Download

Related Questions & Answers

More Questions »

Submit New Assignment

Copy and Paste Your Assignment Here