Why do tortoiseshell coats occur primarily in female cats? O Testosterone suppresses the tortoiseshell gene in males, so tortoiseshell coats appear more often in females, who have less testosterone than males. Tortoiseshell coloring is an X-linked recessive trait, so females with two X chromosomes are more likely to express the trait than males. One of a female's two X chromosomes is randomly inactivated in each cell, so each cell may express different alleles. O The X chromosome is disabled in males, so a tortoiseshell coat, which is an X-linked recessive trait, does not occur in males.
Q: ess in humans is one example of a recessive X-linked trait. In a family in which there are two…
A: color blindness
Q: In female mamals, X chromosome inactivation often leads to phenotypic mosaicism. Assume that black…
A: Coat color in animals is controlled by either autosomal or sex-linked genes. Coat color is a…
Q: In humans, as well as with many other animals, sex is determined by special sex chromosomes. An…
A: Sex linked traits are the traits that are present in the Sex Chromosome that is X and Y . These…
Q: a. In which sex, XY males or XX females, would the Sxl protein bind to the msl-2 mRNA? b. As…
A: Drosophila sex determination and dosage compensation are primarily controlled by two distinct sets…
Q: Xg is an antigen found on red blood cells. This antigen is caused by an Xlinked allele (Xa) that is…
A: X linked alleles are those alleles which are present on the X chromosome. They have distinctive…
Q: You can choose one or more than one option During an experiment with Drosophila, it was…
A: Introduction: Thomas hunts morgan and his colleagues for the experimental verification of the…
Q: In mammals, males have X and Y sex chromosomes, while females have two Xs. While the Y sex…
A: In an XY-chromosomal system of sex determination in mammals, both X and Y-chromosomes are sex…
Q: Hair length of the fur in cats can be either short or long. The allele for short hair is dominant to…
A: Genetics is the scientific study of genes and heredity, or how certain characteristics are passed…
Q: What sex ratio would you expect among the offspring of a cross between a normal mape mouse and a…
A: Sex ratio is defined as the ratio of males and females in the population. Generally in sexually…
Q: heterozygous condition results in a color known as tortoise shell, with both alleles expressed. This…
A: Answers: In cats, yellow color is due to one allele, and black color is due to another allele.…
Q: You have discovered a new X-linked gene in chimpanzees (Chimpanzees have the same sex chromosomes as…
A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…
Q: For an X-linked recessive disease where the father is unaffected: a) An affected father cannot pass…
A: When it is an X linked recessive pattern of inheritance, disease can only be manifested when it is…
Q: The Notch mutation is a deletion on the X chromosome of Drosophila melanogaster. Female flies…
A: Notch mutations in Drosophila are X-linked wing mutations. One of the reasons for these mutations is…
Q: In humans, hemophilia is an X-linked recessive gene and will only be expressed in females if they…
A: Hemophilia is a X linked recessive disorder so which is inherited in homozygous condition. In rare…
Q: How does X inactivation contribute to a person’s phenotype? a. It controls the number and kind of…
A: X chromosome denotes one of the two sex chromosomes, another is the Y chromosome. Females are…
Q: An attached-X female fly, XXn Y (see the “Insights and Solutions”box), expresses the recessive…
A:
Q: A family has an X-linked dominant form of congenital generalizedhypertrichosis (excessive…
A: Genes are the functional unit of DNA. It contains information that is transferred from one…
Q: males, are encoded by different alleles of the same X-linked fur color gene. Based on the phenotypes…
A: As we know that in XY -chromosomal system of sex determination , both X and Y chromosomes are sex…
Q: Drosophila have XX/XY sex determination systems just like mammals. In Drosophila, loci for both eye…
A: Most creatures and many plants show sexual dimorphism; at the end of the day, an individual can be…
Q: The dosage of X chromosome expression is equalized between male and female mammals. Think about the…
A: Calico cats produce a fur coat exhibiting both orange and black colors. The coat color gene is…
Q: Color blindness is an X-linked recessive trait. An XX female can be colorblind in one eye due to…
A: X chromosome inactivatiom is a random process. Either of the X chromosome is inactivated in human in…
Q: An attached-X female fly, XX ¬Y (see the “Insights and Solutions” box), expresses the recessive…
A: Inheritance or heredity is passing-on one trait from the parents to the progeny by either asexual or…
Q: The Notch mutation is a deletion on the X chromosome of Drosophila melanogaster. Female flies…
A: The Notch mutation is a deletion on the X-chromosome of Drosophila melanogaster. Heterozygous notch…
Q: Xg is an antigen found on red blood cells. This antigen is caused by an Xlinked allele (Xa) that is…
A: The offspring (diploid) receives one set of chromosomes from both the parents. The one set received…
Q: Why do females not produce more protein encoded by genes on the X chromosome than males? One X…
A: The Y chromosome is one-third the size of the X chromosome and contains about 55 genes while the X…
Q: Why is it that so many of the sex-linked traits we talk about in humans are carried on X chromosomes…
A: Traits can be dominant, recessive, sex linked recessive or sex linked dominant. Dominance is the…
Q: The inheritance in short wings in Drosophila fruit flies is an x-linked trait, recessive. Which…
A: X-linked recessive inheritance is caused when a mutation occurs in the X-chromosome therefore a male…
Q: Why aren't Turners females who have one X chromosome phenotypically normal given that males only…
A: Turner syndrome is a genetic disorder which occurs in female due to chromosomal abnormality.…
Q: In humans, the genes for red-green color blindness (R = normal, r = color blind) and hemophilia A (H…
A: Introduction :- A gene or group of genes that causes a single trait or disease is referred to as a…
Q: Which of the following is the genotype for a female with a yellow body and red eyes, who is…
A: Alleles are the different forms of a gene. The genotype of two same alleles is called homozygous…
Q: The Notch mutation is a deletion on the X chromosome of Drosophila melanogaster. Female flies…
A: Notch mutations in Drosophila are X-linked wing mutations. One of the reasons for these mutations is…
Q: Are the following events best explained by mutation or epimutation? A. imprinting of the Igf2 geneB.…
A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…
Q: Which of the following statements about calico cats is true? Select all that apply. Da Black fur…
A: The Correct option is A.
Q: Which of the following statements is FALSE? Inactivation of one of the two X chromosomes in the…
A: They were discovered in 1876. These are the tertiary structures of DNA formed as a result of complex…
Q: Which is a FALSE statement about X inactivation in mammalian females? O Females that are…
A: X-chromosome inactivation is the transcriptional silencing of one X chromosome in female mammalian…
Q: In fruit flies, eye color is an X-linked trait. Red eyes (XB) are dominant to maroon eyes (Xb). A…
A: An alternate form of a gene is called alleles. The dominant allele is represented by a capital…
Q: In humans, the genes for red-green color blindness (R=normal, r=color-blind) and hemophilia A…
A: Both color blindness and hemophilia are X-linked traits which means they are inherited from…
Q: Cat breeders are aware that kittens expressing the X-linked calico coat pattern and tortoiseshell…
A: Gene is the unit of heredity that is transferable from the parent to the offsprings. The function of…
Q: A gene that is located on either sex chromosome | Choose Genes on the X chromosome are called |…
A: Gene is the sequence of nucleotide that and code a particular trait.
Q: In domesticated cats, the following are Independently assorting: Normal ears (T) is dominant to…
A: Genetics is the field of biology that deals with the flow of genes (the hereditary factor) in life…
Q: The Notch mutation is a deletion on the X chromosome of Drosophila melanogaster. Female flies…
A: Notch mutations in Drosophila are X-linked wing mutations. One of the reasons for these mutations is…
Q: 1. During the Human Genome Project, scientists learned that most of the human genome A. doesn't code…
A: According to our guideline we can answer only the first question. Upload the other questions…
Q: Clark Kent and Lois Lane Kent are about to have a (Super) baby. As Superman, Clark possesses amazing…
A: In humans, the 23rd pair of chromosome is called the allosome or the sex chromosome. In males, the…
Q: In 1916, Dorothy Osborn suggested that pattern baldness is a sex-influenced trait that is dominant…
A: Pattern baldness is a sex-influenced trait that is dominant in males and recessive in females. The…
Q: If X inactivation in humans shuts down extra X chromosomes, why do XXY and XXX individuals display…
A: Males have one X chromosome and females have two X chromosomes, so one X chromosome is inactivated…
Q: Xg is an antigen found on red blood cells. This antigen is caused by an Xlinked allele (Xa) that is…
A: There are two types of chromosomes present in human: autosomes and sex chromosomes. The transmission…
Q: Can the Lyon hypothesis be tested in a human female who is homozygousfor one allele of the X-linked…
A: Lyon hypothesis: The concept that a gene dosage imbalance between males and females is compensated…
Q: Which of the following statements is TRUE? Overexpression of the X-chromosome in the somatic cells…
A: Females posses two X chromosome and male possess one X chromosome. The Y chromosomes is specific…
Q: Why are X-linked conditions more common in men than in women? Group of answer choices 1. men…
A: The sex chromosomes decide an individual's sex. The majority of people have two sex chromosomes, one…
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
- Analysis of X-Linked Dominant and Recessive Traits In the eighteenth century, a young boy with a skin condition known as ichthyosis hystrix gravior was identified. The phenotype of this disorder includes thickening of skin and the formation of loose spines that are sloughed off periodically. This man married and had six sons, all of whom had the same condition. He also had several daughters, all of whom were unaffected. In all succeeding generations, the condition was passed on from father to son. What can you theorize about the location of the gene that causes ichthyosis hystrix gravior?Note: Don't copy from internet, Also answer correctly in terms of diploid, hemizygous, and carrier!! Thanks Explain why genetic disorders caused by recessive alleles of X-linked genes appear more frequently in males than in females? In your explanation, please include explanations of the following terms: diploid, hemizygous, carrier.What is a Barr body? How many Barr bodies in a person with genotype XXXXX? How is the structure of a Barr body different from that of other chromosomes in the cell? How does the structure of a Barr body affect gene expression? Color-blindness is an X-linked recessive trait. Heterozygous females are not color blind but they can sometimes have partial color blindness. Explain how this can occur.
- In grasshoppers, rosy body color is caused by a recessive mutation; the wild-type body color is green. If the gene for body color is on the X chromosome, what kind of progeny would be obtained from a mating between a homozygous rosy female and a hemizygous wild-type male? (In grasshoppers, females are XX and males are XOIn humans color vision is X-linked, the gene for color vision is located on the X chromosome but is absent on the Y chromosome. Normal color vision (XN) is dominant over colorblindness (Xn). Suppose a colorblind man fathers the children of a woman with genotype XNXN. What is the genotype of the father? What proportion of daughters will be colorblind? What proportion of the sons will be colorblind?A type of baldness is sex –limited such that the allele that causes it is dominant in men and recessive in women. Thus baldness is much more common in men than women even though the locus is on an autosome. How is the pattern of inheritance in this example different from X-linked inheritance of a recessive allele? Group of answer choices A. the trait can be passed from fathers to sons B. the trait can be passed from fathers to daughters C. the trait can be passed from mothers to sons D. the trait can be passed from mothers to daughters
- Red-green colorblindness is inherited in an X-linked recessive pattern in humans. A colorblind man and a woman with normal vision have four children, and one of them is a colorblind male. Does the mother have to be a carrier in this case? (Yes or No) What is the probability of the next child in this family being both colorblind and male? No, 25% Yes, 25% No, 50% Yes, 50%In humans, an X-linked disorder called coloboma iridia (a fissure in the iris_ is a recessive trait. A normal couple has an afflicted daughter. What would be the most plausible scenario for this situation? the female is not the biological mother, but the male is the biological father the father carries one recessive allele, and the mother carries one recessive allele the mother carries two recessive alleles the male is not the biological father, but the female is the biological mother both parents are heterozygous for the traitLet’s suppose that two different X-linked genes exist in mice,designated with the letters N and L. Gene N exists in a dominant,normal allele and in a recessive allele, n, that is lethal. Similarly,gene L exists in a dominant, normal allele and in a recessive allele,l, that is lethal. Heterozygous females are normal, but males thatcarry either recessive allele are born dead. Explain whether or notit would be possible to map the distance between these two genesby making crosses and analyzing the number of living and deadoffspring. You may assume that you have strains of mice in whichfemales are heterozygous for one or both genes.
- Duchenne muscular dystrophy is an X-linked, recessive disorder in which muscles waste away early in life, resulting in death in the teens or twenties. A man and woman in their late thirties have five children—three boys (ages 1, 3, and 10 years) and two girls (ages 5 and 7 years). The oldest, boy shows symptoms of the disease. What are the probabilities that their other children will develop the disease? Give only typing answer with explanation and conclusionRed-green colorblindness in humans is recessive and x-linked. if a woman, heterozygous for colorblindness marries a colorblind man, what is the probability that they will have colorblind daughter?Which of the following statements is false? Dosage compensation is accomplished in humans by stimulation of gene expression from the single X chromosome. Dosage compensation is accomplished in humans by inactivating a female X chomosome. An individual with Turner Syndrome has no Barr bodies. An individual with Klinefelter syndrome generally has one Barr body. A typical XX human female has one Barr body.