Drosophila has four recessive genes on four different chromosomes (the fact that they are on different...
Drosophila has four recessive genes on four different chromosomes (the fact that they are on different chromosomes indicates that they will sort independently); w (white eyes), dp (dumpy wings), e (ebony body), and ey (eyeless). The genotypes of three flies are given below:
Fly A w/w, dp+/dp, e+/e, ey+/ey+
Fly B w+/w+, dp+/dp, e+/e, ey+/ey
Fly C w/w, dp+/dp+, e/e, ey+/ey
Use the product rule and the sum rule to solve the following problems:
a. What is the probability that fly A will produce a gamete with the w allele?
b.What is the probability that fly A will produce a gamete with the dp+ allele?
c.What is the probability that fly A will produce a gamete with the ey allele?
d.What is the probability that fly A will produce a gamete with w,dp,e,ey+?
Homework Answers
a. The probability that the fly A will produce a gamete with w allele is 1 since it is homozygous for w the w allele and hence will definitely pass it to its gamete.
b. The probability that the fly A will produce a gamete with dp+ allele is 0.5 as it is heterozygous for dp+ and there is a 50% chance to pass it to its gamete.
c. The probability of passing an ey allele to its gamete is 0 as it doesn't have ey as any of its alleles.
d. The probability of producing a gamete with w,dp,e,ey+ is 0.25 (1*1/2*1/2*1=0.25)
Add Answer to:
Drosophila has four recessive genes on four different
chromosomes (the fact that they are on different...
Assortment of genes on same chromosome In the fruit fly Drosophila, there is a dominant gene...
Assortment of genes on same chromosome In the fruit fly Drosophila, there is a dominant gene for normal wings and its recessive allele for vestigial wings. At another gene locus. there is a dominant gene for red eyes and its recessive allele for purple eyes. A female that was heterozygous at both gene loci was mated with a male that is homozygous for both recessive alleles. Knowing this, complete the sentences with the correct terms. 94% crossing over independent assortment...
In Drosophila, the autosomal recessive traits for dumpy wings (dp) and cinnabar eyes (cn) are found...
In Drosophila, the autosomal recessive traits for dumpy wings (dp) and cinnabar eyes (cn) are found on chromosome 2, separated by 44 map units. The allele for shaven bristles (sv) is found on chromosome 4 and is also recessive. A female with shaven. bristles is crossed to a male expressing dumpy wings and cinnabar eyes. FI females are test-crossed to males expressing all three traits. 3. What proportion of F2 flies (of either sex) will be completely wild type? a....
In Drosophila (fruit flies) the genes how, dumpy and ebony are located on chromosome 3. LOF...
In Drosophila (fruit flies) the genes how, dumpy and ebony are located on chromosome 3. LOF = loss of function. Flies homozygous for a LOF mutation (no gene product made) in ebony have dark black bodies. Flies homozygous for a LOF mutation (no gene product made) in dumpyhave truncated (short) wings. Flies homozygous for a partial LOF mutation (some gene product made but significantly less than normal) in how have wings that will not fold down (held out wings; that's...
Practice Problem 72 The fruit fly Drosophila melanogaster has a haploid chromosome number of n 4,...
Practice Problem 72 The fruit fly Drosophila melanogaster has a haploid chromosome number of n 4, and 2n 8. Chromosome IV in this species is a tiny autosome. Flies trisomic for chromosome IV are fertile and have no apparent defects The eyeless (ey) and gawky (gw) loci are tightly linked on chromosome I Loss-of-function ey and gw alleles are recessive to ey and gw, respectively. Flies homozygous for ey lack eyes, and flies homozygous for gw have disrupted circadian rhythms....
In Drosophila (fruit flies) the genes how, dumpy and ebony are located on chromosome 3. LOF...
In Drosophila (fruit flies) the genes how, dumpy and ebony are located on chromosome 3. LOF = loss of function. Flies homozygous for a LOF mutation (no gene product made) in ebony have dark black bodies. Flies homozygous for a LOF mutation (no gene product made) in dumpy have truncated (short) wings. Flies homozygous for a partial LOF mutation (some gene product made but significantly less than normal) in how have wings that will not fold down (held out wings;...
6. In Cross 1, a yellow eyed, long wing fruit fly from a pure breeding strain...
6. In Cross 1, a yellow eyed, long wing fruit fly from a pure breeding strain is mated to a red eye, short wing fruit fly from a pure breeding strain. All of their offspring (F1) had red eyes and long wings. In Cross 2, one of the F1 offspring is mated to a fly with yellow eyes and short wings, and this cross gave the following F2 population: 194 flies with long wings and red eyes, 796 flies with...
Nameindulia Los Drosophila Genetics Predictions-L113 (20 pts.) Part I. Meiosis and Punnett Squares Remember, whenever you...
Nameindulia Los Drosophila Genetics Predictions-L113 (20 pts.) Part I. Meiosis and Punnett Squares Remember, whenever you use Punnett Squares to solve genetics problems, be sure you are completing each of the following steps: 1) Identify the genotypes of the parents. 2) For the specific traits of interest, figure out what kinds of haploid gametes each parent can make. In each gamete, there should be one allele for each trait of interest. If there is more than one trait, make sure...
Pre-lecture lesson 2.12: Linkage and Gene Mapping You are charged with testing whether 2 different genes...
Pre-lecture lesson 2.12: Linkage and Gene Mapping You are charged with testing whether 2 different genes are independently assorting during meiosis in Drosophila melanogaster, the fruit fly The 2 genes you will be observing for this experiment are: Black: a recessive allele of this gene (b) results in a dark body color (somewhat similar to ebony, but a richer dark coloration that is less ashen-colored). The dominant allele for this gone (B) produces wild type body color Vestigial: a recessive...
Drosophila melanogaster, the fruit fly, has a 2n chromosome number of 8 (4 chromosomes – 3...
Drosophila melanogaster, the fruit fly, has a 2n chromosome number of 8 (4 chromosomes – 3 autosomes and 1 sex chromosome). Assume that you are microscopically examining the mitotic and meiotic cells of this organism. You note that in the female, two chromosomal pairs are metacentric and two pairs are acrocentric. Draw the chromosomal configurations as you would expect to see them at the stages listed: i. mitotic metaphase ii. primary oocyte (meiotic metaphase I) iii. secondary oocyte (meiotic metaphase...
BIO340 Recitation 5 Spring 2020 Your professor is having you look at two genes in Drosophila...
BIO340 Recitation 5 Spring 2020 Your professor is having you look at two genes in Drosophila fruit flies to determine experimentally whether they are linked. One trait is eye color and two alleles are present at the gene: se+ is the wild-type allele for red eyes, and se is the mutant, recessive allele for sepia eyes. The second trait is body color and two alleles are present at this gene: e+ is the wild-type allele for grey body, and e...
Assortment of genes on same chromosome In the fruit fly Drosophila, there is a dominant gene for normal wings and its recessive allele for vestigial wings. At another gene locus. there is a dominant gene for red eyes and its recessive allele for purple eyes. A female that was heterozygous at both gene loci was mated with a male that is homozygous for both recessive alleles. Knowing this, complete the sentences with the correct terms. 94% crossing over independent assortment...
In Drosophila, the autosomal recessive traits for dumpy wings (dp) and cinnabar eyes (cn) are found on chromosome 2, separated by 44 map units. The allele for shaven bristles (sv) is found on chromosome 4 and is also recessive. A female with shaven. bristles is crossed to a male expressing dumpy wings and cinnabar eyes. FI females are test-crossed to males expressing all three traits. 3. What proportion of F2 flies (of either sex) will be completely wild type? a....
Practice Problem 72 The fruit fly Drosophila melanogaster has a haploid chromosome number of n 4, and 2n 8. Chromosome IV in this species is a tiny autosome. Flies trisomic for chromosome IV are fertile and have no apparent defects The eyeless (ey) and gawky (gw) loci are tightly linked on chromosome I Loss-of-function ey and gw alleles are recessive to ey and gw, respectively. Flies homozygous for ey lack eyes, and flies homozygous for gw have disrupted circadian rhythms....
6. In Cross 1, a yellow eyed, long wing fruit fly from a pure breeding strain is mated to a red eye, short wing fruit fly from a pure breeding strain. All of their offspring (F1) had red eyes and long wings. In Cross 2, one of the F1 offspring is mated to a fly with yellow eyes and short wings, and this cross gave the following F2 population: 194 flies with long wings and red eyes, 796 flies with...
Nameindulia Los Drosophila Genetics Predictions-L113 (20 pts.) Part I. Meiosis and Punnett Squares Remember, whenever you use Punnett Squares to solve genetics problems, be sure you are completing each of the following steps: 1) Identify the genotypes of the parents. 2) For the specific traits of interest, figure out what kinds of haploid gametes each parent can make. In each gamete, there should be one allele for each trait of interest. If there is more than one trait, make sure...
Pre-lecture lesson 2.12: Linkage and Gene Mapping You are charged with testing whether 2 different genes are independently assorting during meiosis in Drosophila melanogaster, the fruit fly The 2 genes you will be observing for this experiment are: Black: a recessive allele of this gene (b) results in a dark body color (somewhat similar to ebony, but a richer dark coloration that is less ashen-colored). The dominant allele for this gone (B) produces wild type body color Vestigial: a recessive...
Most questions answered within 3 hours.
-
Given a negative binomial random Variable X with mean of 6 and
variance of 12, compute...
asked 11 minutes ago -
1. Compute r, the correlation coefficient for the following set
of bivariate data. Is this correlation...
asked 19 minutes ago -
Question 3: (1 mark for each part) The percentage of coronavirus
(COVID-19) infected people in a...
asked 3 minutes ago -
It is necessary for an automobile producer to estimate the mean
number of miles per gallon...
asked 1 hour ago -
I need to return a dynamic array from a class member function
and print out the...
asked 15 minutes ago -
A student took 5 g of H2 and 5 g of N2 for
the following reaction....
asked 17 minutes ago -
TX Honey Inc. sells 3,000 bottles of honey bee for $70 each that
incur variable costs...
asked 18 minutes ago -
For a particular transverse wave that travels along a string
that lies on the x-axis, the...
asked 25 minutes ago -
The
legal doctrine of remittitur allows the:
a. jury to reduce the damages requested by the...
asked 26 minutes ago -
1.Which of the following assumptions is required to
obtain a first-differenced estimator in a two-period panel...
asked 45 minutes ago -
The hydronium ion concentration of an aqueous solution of
0.47 M acetylsalicylic acid
(aspirin),
HC9H7O4, is...
asked 32 minutes ago -
EXERCISE 16. Urn A contains 4 white and 3 red marbles, urn B
contains 2 white...
asked 54 minutes ago