Homework Answers
The correct option is the mother passes the allele that codes for the disease.
.
In drosophila, sex is determined by the presence of one or two X chromosomes.
A genotype having 1 X chromosome will be male. The gamete produced by the male will be X and 0.
A genotype having 2 X chromosome is female. The gametes produced by the female will be X and X.
So, in male having genotype XO, the X chromosome will be inherited from the mother.
In sex linked disease the male offspring can express the disease if the X chromosome present in male has the defective gene. This X chromosome will be inherited from the mother. Thus, the disease will be expressed in the male progeny if the mother passed the allele coding for disease.
Add Answer to:
In drosophila (fruit flies), male is the heterogametic sex. This means that if a recessive disease...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to a...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to a mutation in a gene on the X-chromosome. The white eyed phenotype is X-linked recessive. The sex chromosomes in fruit flies are: females, normally XX; males, normally XY. If a red-eyed female who is a carrier of the white eyed allele (normal or wild-type phenotype) mates with a white-eyed male (mutant phenotype), what is the likelihood that their male offspring will have red eyes? Parents:...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to mutation...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to mutation in a gene on the X-chromosome. The white eyed phenotype is X-linked recessive. The sex chromosomes in fruit flies are: females, normally XX; males, normally XY. If a white-eyed female (mutant phenotype) mates with a red-eyed male (normal or wild- type phenotype), what is the likelihood that their female offspring will have red eyes? Parents: white-eyed female X red-eyed male Select one: a. O...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to a...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to a mutation in a gene on the X-chromosome. The white eyed phenotype is X-linked recessive. The sex chromosomes in fruit flies are: females, normally XX; males, normally XY. If a true breeding red-eyed female (normal or wild-type phenotype) mates with a white- eyed male (mutant phenotype), what is the likelihood that their male offspring will have white eyes? Parents: red-eyed female X white-eyed male Select...
Female fruit flies typically have two X chromosomes; male fruit flies typically have one X and...
Female fruit flies typically have two X chromosomes; male fruit flies typically have one X and one Y chromosome. They have other chromosomes too that are NOT sex chromosomes. Suppose there is a gene in fruit flies that influences the hairs a fly has on its thorax (the middle section of its body). A recessive allele of this gene causes the hairs to be very thick, while a dominant allele causes the hairs to be very thin. Suppose a heterozygous...
10. Red green colorblindness is an X-linked recessive disease. That means that it is carried on...
10. Red green colorblindness is an X-linked recessive disease. That means that it is carried on the X chromosome, so men have just one copy of the gene while women have two. In women, both copies must be the recessive disease allele in order to show the disease phenotype, but because men only have one allele, just one recessive allele causes the disease phenotype. Matt and Kate both have normal vision, but Kate's father is colorblind. Use X for the...
10. In humans Wiskott–Aldrich syndrome (WAS) is a rare sex-linked recessive disease characterized by eczema, thrombocytopenia...
10. In humans Wiskott–Aldrich syndrome (WAS) is a rare sex-linked recessive disease characterized by eczema, thrombocytopenia (low platelet count), immune deficiency, and bloody diarrhea. This disease is due to a sex-linked recessive allele. a. Examine the statement below. Is this statement true or false? Why? Explain. Boys usually inherit sex-linked recessive disorders from their fathers. Sarah is healthy and but her brother has WAS. Her mother and father both have healthy phenotypes. Sarah marries Fred, a healthy man without WAS....
the fruit fly, Drosophila melanogaster, an allele (v) of the gene vermillion gives flies purple eyes...
the fruit fly, Drosophila melanogaster, an allele (v) of the gene vermillion gives flies purple eyes and is recessive to the wildtype red eye color (v+). An allele y of the yellow gene, gives flies a yellow body color compared to the dominant brown body color (yt). A heterozygous females for the two different mutations is test-crossed with mutant (i.e., homozygous recessive) males. The phenotypes of the progeny of this cross and their corresponding numbers are given below Yellow body,...
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, the X-linked recessive mutation vermillion (v) causes bright red eyes, in contrast to the...
In Drosophila, the X-linked recessive mutation vermillion (v) causes bright red eyes, in contrast to the brick-red eyes caused by the wild-type allele. A separate autosomal recessive mutation, brown (bw), causes flies to have brown eyes. Flies carrying both mutations have no eye pigmentation and are white-eyed. Determine the F1 and F2 phenotypic ratios for each sex from the following crosses: (a) brown females X vermillion males (b) white-eyed females X wild-type males
A sex-linked gene is traditionally... Multiple Choice A. a gene that is turned on (makes protein)...
A sex-linked gene is traditionally... Multiple Choice A. a gene that is turned on (makes protein) only when the female hormone estrogen is present. B. a gene on the X chromosome that encodes traits seen only in females. C. a gene found on any chromosome; they are X-shaped when they are metaphase chromosomes. D. a gene that encodes traits seen only in females. E. a gene on the X chromosome. In fruit flies, white eyes is caused by a sex-linked...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to a mutation in a gene on the X-chromosome. The white eyed phenotype is X-linked recessive. The sex chromosomes in fruit flies are: females, normally XX; males, normally XY. If a red-eyed female who is a carrier of the white eyed allele (normal or wild-type phenotype) mates with a white-eyed male (mutant phenotype), what is the likelihood that their male offspring will have red eyes? Parents:...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to mutation in a gene on the X-chromosome. The white eyed phenotype is X-linked recessive. The sex chromosomes in fruit flies are: females, normally XX; males, normally XY. If a white-eyed female (mutant phenotype) mates with a red-eyed male (normal or wild- type phenotype), what is the likelihood that their female offspring will have red eyes? Parents: white-eyed female X red-eyed male Select one: a. O...
Fruit flies normally have dull red eyes. Some fruit flies have white eyes due to a mutation in a gene on the X-chromosome. The white eyed phenotype is X-linked recessive. The sex chromosomes in fruit flies are: females, normally XX; males, normally XY. If a true breeding red-eyed female (normal or wild-type phenotype) mates with a white- eyed male (mutant phenotype), what is the likelihood that their male offspring will have white eyes? Parents: red-eyed female X white-eyed male Select...
10. Red green colorblindness is an X-linked recessive disease. That means that it is carried on the X chromosome, so men have just one copy of the gene while women have two. In women, both copies must be the recessive disease allele in order to show the disease phenotype, but because men only have one allele, just one recessive allele causes the disease phenotype. Matt and Kate both have normal vision, but Kate's father is colorblind. Use X for the...
the fruit fly, Drosophila melanogaster, an allele (v) of the gene vermillion gives flies purple eyes and is recessive to the wildtype red eye color (v+). An allele y of the yellow gene, gives flies a yellow body color compared to the dominant brown body color (yt). A heterozygous females for the two different mutations is test-crossed with mutant (i.e., homozygous recessive) males. The phenotypes of the progeny of this cross and their corresponding numbers are given below Yellow body,...
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....
Most questions answered within 3 hours.
-
Why did the observed chemistry of thallium mislead Mendelev to
place the group 13 element (Tl)...
asked 37 minutes ago -
A sine wave signal is displayed on the screen of an
oscilloscope. 6 peak-to-peak divisions are...
asked 3 hours ago -
a
1500 kg car accelerates from 0 to 25 m / s in 21.0s. How much...
asked 4 hours ago -
Calculate the molarity of each of the following solutions:
(a) 30.5 g of ethanol (C2H5OH) in...
asked 4 hours ago -
1 Refer to the build-borrow-or-buy framework as a decision tree
for the Adidas company. Identify a...
asked 4 hours ago -
Problem 2: The Problem of Social Cost. A Rancher and Farmer live
side-by-side to each other....
asked 5 hours ago -
a uniform bar of weight 40N is 4 meter long. weights
on 60N and 100N are...
asked 5 hours ago -
Define Diet counceling? What are the
responsibilities of a counselor?
asked 7 hours ago -
Hey im just confused about how to put the ' A angle n' and ' S...
asked 7 hours ago -
A short essay about the WSJ article on Oreo versus Hydrox.
asked 7 hours ago -
##8. A program contains the following function definition:
##def cube(num):
##return num * num * num...
asked 7 hours ago -
find the value z of a standard Normal variable that satisfies
each of the given conditions....
asked 7 hours ago