males, are encoded by different alleles of the same X-linked fur color gene. Based on the phenotypes of parents, what sex chromosomes do the orange female and the tortie male offspring have? orange na black The orange female has only one X chromosome, and the tortoiseshell male is XXY. The orange female has two X chromosomes, and the tortoiseshell male is missing a Y chromosome. The orange female has two X chromosomes, and the tortoiseshell male is XXY. The orange female has only one X chromosome, and the tortoiseshell male is YO. Select the most likely explanations for the sex chromosome types. Random X inactivation in XXY causes orange and black patches in the tortoiseshell male. When only one X chromosome is present in the female, it does not become inactivated. The tortoiseshell male has only one X chromosome, and it carries the black allele. The orange female has two X chromosomes, and the black X from her mother is inactivated.

males, are encoded by different alleles of the same X-linked fur color gene. Based on the phenotypes of parents, what sex chromosomes do the orange female and the tortie male offspring have? orange na black The orange female has only one X chromosome, and the tortoiseshell male is XXY. The orange female has two X chromosomes, and the tortoiseshell male is missing a Y chromosome. The orange female has two X chromosomes, and the tortoiseshell male is XXY. The orange female has only one X chromosome, and the tortoiseshell male is YO. Select the most likely explanations for the sex chromosome types. Random X inactivation in XXY causes orange and black patches in the tortoiseshell male. When only one X chromosome is present in the female, it does not become inactivated. The tortoiseshell male has only one X chromosome, and it carries the black allele. The orange female has two X chromosomes, and the black X from her mother is inactivated.

Name: males, one orange female, and one tortoiseshell male, for a total of
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Description: males, one orange female, and one tortoiseshell male, for a total of six kittens. Orange and black fur colorare encoded by different alleles of the same X-linked fur color gene. Based on the phenotypes of theparents, what sex chromosomes do the oran

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter14: Chromosomes And Human Inheritance

Section: Chapter Questions

Problem 3GP: Human females have two X chromosomes (XX); males have one X and one Y chromosome (XY). a. With...

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Human sex chromosomes are XX for females and XY for males. a. With respect to an X-linked gene, how many different types of gametes can a male produce? b. If a female is homozygous for an X-linked allele, how many different types of gametes can she produce with respect to this allele? c. If a female is heterozygous for an X-linked allele, how many different types of gametes can she produce with respect to this allele?
. In mice, the dominant allele Gs of the X-linked geneGreasy produces shiny fur, while the recessive wildtype Gs+ allele determines normal fur. The dominantallele Bhd of the X-linked Broadhead gene causesskeletal abnormalities including broad heads andsnouts, while the recessive wild-type Bhd+ alleleyields normal skeletons. Female mice heterozygousfor the two alleles of both genes were mated withwild-type males. Among 100 male progeny of thiscross, 49 had shiny fur, 48 had skeletal abnormalities,2 had shiny fur and skeletal abnormalities, and 1 waswild type.a. Diagram the cross described and calculate thedistance between the two genes.b. What would have been the results if you hadcounted 100 female progeny of the cross?
Table shows that Turner syndrome occurs when an individualinherits one X chromosome but lacks a second sex chromosome.Can Turner syndrome be due to nondisjunction duringoogenesis, spermatogenesis, or both? If a phenotypically normalcouple has a color-blind child (due to a recessive X-linkedallele) with Turner syndrome, did nondisjunction occur duringoogenesis or spermatogenesis in this child’s parents? Explainyour answer.
The most common form of colorblindness is a recessive, sex-linked hereditary con dition caused by a defect on the X chromosome. Females are XX, while males are XY. Individuals inherit one chromosome from each parent, with equal probability; for example, an individual has a 50% chance of inheriting their father's X chromosome, and a 50% chance of inheriting their father's Y chromosome. If a male has an X chromosome with the defect, he is colorblind. However, a female with only one defective X chromo some will not be colorblind. Thus, colorblindness is more common in males than females; 7% of males are colorblind but only 0.5% of females are colorblind. (a) Assume that the X chromosome with the wild-type allele is X+ and the one with the disease allele is X. What is the expected frequency of each possible female genotype: X+X+, X+X¯, and X-X-? What is the expected frequency of each possible male genotype: X+ Y and X-Y? (b) Suppose that two parents are not colorblind. What is the…
In cats, orange coat color is determined by the b allele, and blackcoat color is determined by the B allele. The heterozygous conditionresults in a coat pattern known as tortoiseshell. These genesare X-linked. What kinds of offspring would be expected from across of a black male and a tortoiseshell female? What are thechances of getting a tortoiseshell male?
Duchenne muscular dystrophy is a recessive disorder caused by a rare,loss-of-function allele that is located on the X chromosome in humans. Anunaffected woman (i.e., without disease symptoms) who is heterozygousfor the X-linked allele causing Duchenne muscular dystrophy has childrenwith a man with a functional (non-disease-causing) allele. What is theprobability that this couple will have an unaffected son?
In humans, color vision depends on genes encodingthree pigments. The R (red pigment) and G (green pigment) genes are close together on the X chromosome,whereas the B (blue pigment) gene is autosomal. A recessive mutation in any one of these genes can cause colorblindness. Suppose that a color-blind man married awoman with normal color vision. The four sons from thismarriage were color-blind, and the five daughters werenormal. Specify the most likely genotypes of both parents and their children, explaining your reasoning. (Apedigree drawing will probably be helpful.) (Problem 50is by Rosemary Redfield.)
The following X-linked recessive traits are found in fruit flies:vermilion eyes are recessive to red eyes, miniature wings are recessiveto long wings, and sable body is recessive to gray body. A cross wasmade between wild-type males with red eyes, long wings, and graybodies and females with vermilion eyes, miniature wings, and sablebodies. The heterozygous female offspring from this cross, whichhad red eyes, long wings, and gray bodies, were then crossed tomales with vermilion eyes, miniature wings, and sable bodies. Thefollowing data were obtained for the F2 generation (including bothmales and females):1320 vermilion eyes, miniature wings, sable body1346 red eyes, long wings, gray body102 vermilion eyes, miniature wings, gray body90 red eyes, long wings, sable body42 vermilion eyes, long wings, gray body48 red eyes, miniature wings, sable body2 vermilion eyes, long wings, sable body1 red eyes, miniature wings, gray bodyA. Calculate the map distances separating the three genes.B. Is…
The following X-linked recessive traits are found in fruit flies:vermilion eyes are recessive to red eyes, miniature wings are recessiveto long wings, and sable body is recessive to gray body. A cross wasmade between wild-type males with red eyes, long wings, and graybodies and females with vermilion eyes, miniature wings, and sablebodies. The heterozygous female offspring from this cross, whichhad red eyes, long wings, and gray bodies, were then crossed tomales with vermilion eyes, miniature wings, and sable bodies. Thefollowing data were obtained for the F2 generation (including bothmales and females):1320 vermilion eyes, miniature wings, sable body1346 red eyes, long wings, gray body102 vermilion eyes, miniature wings, gray body90 red eyes, long wings, sable body42 vermilion eyes, long wings, gray body48 red eyes, miniature wings, sable body2 vermilion eyes, long wings, sable body1 red eyes, miniature wings, gray bodyWhat information do you know based on the question and your…
The following X-linked recessive traits are found in fruit flies:vermilion eyes are recessive to red eyes, miniature wings are recessiveto long wings, and sable body is recessive to gray body. A cross wasmade between wild-type males with red eyes, long wings, and graybodies and females with vermilion eyes, miniature wings, and sablebodies. The heterozygous female offspring from this cross, whichhad red eyes, long wings, and gray bodies, were then crossed tomales with vermilion eyes, miniature wings, and sable bodies. Thefollowing data were obtained for the F2 generation (including bothmales and females):1320 vermilion eyes, miniature wings, sable body1346 red eyes, long wings, gray body102 vermilion eyes, miniature wings, gray body90 red eyes, long wings, sable body42 vermilion eyes, long wings, gray body48 red eyes, miniature wings, sable body2 vermilion eyes, long wings, sable body1 red eyes, miniature wings, gray bodyWhat topic in genetics does this question address?
Clark Kent and Lois Lane Kent are about to have a (Super) baby. As Superman, Clark possesses amazing traits, including heat-ray vision. Assume that this is: a) a dominant trait, and b) carried on the X chromosome. If Clark and Lois have a boy or a girl, what is the probability that they will possess their father's amazing abilities? (Remember: females have XX chromosomes, while males have XY chromosomes. The Y chromosome doesn’t carry any of the genes on the X chromosome). X H = Superman’s heat-ray vision allele on his X chromosome Y = Superman’s Y chromosome X h = Lois’s normal vision allele on her X chromosome
In mice, dwarfism is caused by an X-linked recessive allele, and pink coat is caused by an autosomal dominantallele (coats are normally brownish). If a dwarf femalefrom a pure line is crossed with a pink male from a pureline, what will be the phenotypic ratios in the F1 and F2 ineach sex? (Invent and define your own gene symbols.)