Q: The autosomal (not X-linked) gene for brachydactyly, short fingers, is dominant to normal finger…
A: Brachydactyly is an autosomal dominant trait. Normal = bb Affected = BB, Bb
Q: Victoria’s youngest child, Beatrice, gave birth to one daughter, one normal son, and two hemophilic…
A: All the individuals obtain one allele from the father and one from the mother. Two alleles or…
Q: Now assume that the pedigree shown in question 1 shows the inheritance of a rare genetic disease.…
A: The mode of inheritance is a pattern of obtaining parentral alleles or genes to the offsprings. The…
Q: Please explain why sex linked recessive traits are inherited by the son from his mother. If a mother…
A: Sex Linked Recessive Traits The disease appears almost always in males whose mothers are…
Q: Is this autosomal recessive?
A: Autosomal means the chromosomes that are not the sex chromosome but the rest of the 22 pairs of…
Q: A cross was performed between a female curly winged fly and a normal (straight) winged male fly.…
A: As per the question, a cross was performed between a female curly winged fly and a male straight…
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: autosomal recessive autosomal dominant X-linked dominant X-linked recessive Y-linked
A: Answer: A pedigree is a fmily tree or chart made of symbols and lines that represent a person…
Q: Understanding x - linked dominant/ recessive inheritance patters
A: X-linked inheritance is specifically a sex linked inheritance where the trait inheritance within the…
Q: In humans, one of the genes determining color vision islocated on the X chromosome. The dominant…
A: Sex-linked disorders generally have genes associated with the X chromosome. It is studied under the…
Q: Is this pedigree recessive or dominant? Is it autosomal or sex-linked?
A: Pedigree is defined as the diagrammatic representation of individuals of a family for a particular…
Q: Why is the development of individuals with Klinefelter's and Turner's syndromes relatively normal,…
A: This syndrome occur due to presence of an additional copy of X chromosomes resulting into karyotype…
Q: The genotype XO corresponds to:
A: Genetic disorders are inherited disorders. In genetic disorders, the disorders related to sex…
Q: Red-green color blindness in humans is due to an X- linked recessive gene. thin
A: Red-green color blindness is the most common variety of color deficiency in humans. It happens to…
Q: A purebred, red-eyed female fruit fly is mated with a white-eyed, male fruit fly. White eyes are…
A: All mammalian organisms exhibit sexual dimorphism. It means that there is the presence of a male and…
Q: When examining a human pedigree, what features do you look forto distinguish between X-linked…
A: Genetic disorders are of different types depending on the location of the infected genes and the…
Q: In humans, hemophilia is an X-linked recessive gene and will only be expressed in females if they…
A: Hemophilia is an inherited disorder where blood doesn't clot properly due to loss of body's capacity…
Q: This is a typical pedigree for a family that carries neurofibromatosis. Is individual I-2 most…
A: Pedigree analysis can help to determine genotypes, identify phenotypes, and predict how a trait will…
Q: The autosomal (not X-linked) gene for brachydactyly, short fingers, is dominant to normal finger…
A: Given: The autosomal (not X-linked) gene for brachydactyly, short fingers, is dominant to normal…
Q: A man inherits Duchenne muscular dystrophy, which is a recessive X-linked allele.
A: X-linked recessive traits are caused by the mutations in gene present on the X chromosomes. Males…
Q: The above image shows a pedigree for a monogenic inherited disease. Although this trait is only…
A: Pedigree analysis is a chart diagram that helps in studying the pattern of inheritance of genes from…
Q: Is this pedigree dominant or recessive? Autosomal or sex-linked? What is also usual about this…
A: The pedigree is the genetical analysis that gives us idea about the inheritance pattern of a…
Q: From this pedigree is it dominant or recessive. Is ur autosomal or sex-linked?
A: Pedigree is define a diagrammatic representation of the individuals of a family for a particular…
Q: Is this pedigree dominant or recessive. Which best defines this pedigree Autosomal or sex-linked?
A: Introduction :- A pedigree is a diagram of family history that uses standardized symbols for…
Q: Autosomal aneuploidy is usually lethal due to genetic_________
A: Introduction Chromosomal aberrations are the common cause of abnormal development of the embryo or…
Q: If a normal male reproduces with a heterozygous normal female, what are the expected genotypes and…
A: Hemophilia is a common hereditary coagulation blood disorder due to deficiency or reduced activity…
Q: Huntington’s disease is an autosomal dominant disease in humans, but the first symptoms usually…
A: Autosomal dominant disorder inheritance The dominant autosomal mutated gene cause the defect in…
Q: Is this pedigree autosomal dominant, autosomal recessive, or X-linked recressive? Can you please…
A: Autosomal dominant and Autosomal recessive: The word autosomal refers to the "autosomes" which means…
Q: X-linked disorders (like hemophilia) are more likely to affect people of one gender than the other.…
A: Haemophilia is one of the X-linked recessive hereditary genetic diseases, which occur when the gene…
Q: If a father is unaffected by an X-linked condition and the mother is a carrier, what is the…
A: Genetics is the branch of biology that deals with the study of heredity and variations. Gregor…
Q: Recessive hemophilia, x-linked. The man has it, and his wife is a carrier. Draw a Punnett square to…
A: Parent 1 Male - Hemophilia (Xh Y) Parent 2 Female – Carrier (Xh X) In the above cross, XhXh…
Q: Determine the most likely mode of inheritance for the following pedigree: Question 5 options:…
A: Every human is made up of millions of cells. Cells are the basic structural and functional units of…
Q: This pedigree exhibits a maternal effect. What is the genotype of each individual?
A: Pedigree analysis is useful when identifyig any population when progeny data from several…
Q: Can a son be a carrier for an X-linked trait? Explain.
A: The genetic makeup of an offspring is determined by the genetic makeup of both parents; that is, the…
Q: Why does a single X chromosome cause infertility and other abnormalities in Turner Syndrome…
A: Turner syndrome (TS) is a genetic disorder that mostly affects females. The clinical features of…
Q: Hemophilia A is caused by a recessive X-linked allele that encodes a defective form of a clotting…
A: Hemophilia is a blood clotting disorder which slows down the process of blood clotting. People who…
Q: Number of FEMALE offspring that would have the condition of an X-linked trait, if an affected man…
A: The mode of inheritance is a pattern of obtaining parentral alleles or genes to the offsprings. The…
Q: Duchenne muscular dystrophy (DMD) is caused bya recessive mutant allele of an X-linked gene…
A: Duchenne muscular dystrophy (DMD) is a progressive form of muscular dystrophy that results in muscle…
Q: Red/green colorblindness X-recessive pedigree
A: Answer: X-linked recessive pedigree is a pedigree chart of a family in which the disease is transfer…
Q: Colorblindness is an X-linked trait found in humans. What are the chances that a colorblind man will…
A: Colorblindness is a recessive disorder located on the X chromosome. Since, it is recessive, two…
Q: Down syndrome individuals carry an extra chromosome _________ in their cells.
A: Genes are the units (physical and functional) of heredity, made up of DNA or deoxyribonucleic. They…
Q: Why are X-linked recessive disorders never passedfrom a father to a son?
A: A genetic characteristic or disorder can be handed down from parent to kid via mutations in a gene…
Q: Albinism and sickle cell anemia are both autosomal recessive disorders that are expressed only in…
A: Father genotype:- AaSs Mother's genotype:- AaSs Aa-Albinism carrier Ss-Sickle cell anemia carrier…
Q: Albinism in humans is autosomal and fully recessive to normal color. A couple, who are both normal,…
A: Albinism is an autosomal recessive disorder which means that only homozygous recessive genotype will…
Q: X-Linked
A: Inheritance can be defined as the process by which genetic information is passed down from the…
Q: In fruit flies, Cinnabar eyes are encoded by a recessive allele located on the X chromosome. If a…
A: An allele may be defined as different forms of the same gene. The dominant allele is the one that…
Q: The above pedigree represents the inheritance of a disease that is most likely Autosomal Dominant O…
A:
Q: Pedigree A: YES or NO Could this trait be inherited as a simple autosomal recessive? Could this…
A:
Q: Pedigrees indicate that color blindness and which two forms of hemophilia are X-linked traits?
A: Introduction Pedigree Analysis: this is the new approach to study the inheritance pattern in the…
Duchenne muscular dystrophy, which is inherited in an X-linked recessive pattern, nearly always occurs in males. Explain why.
Step by step
Solved in 2 steps
- Achondroplasia is an autosomal dominant disorder characterized by disproportionate short stature: the legs and arms of people with achondroplasia are short compared with the head and trunk. The disorder is due to a base substitution in the gene, located on the short arm of chromosome 4, that encodes fibroblast growth factor receptor 3 (FGFR3). Although achondroplasia is clearly inherited as an autosomal dominant trait, more than 80% of the people who have achondroplasia are born to parents with normal stature. This high percentage indicates that most cases are caused by newly arising mutations; these cases (not inherited from an affected parent) are referred to as sporadic. Studies have demonstrated that sporadic cases of achondroplasia are almost always caused by mutations inherited from the father (paternal mutations). In addition, the occurrence of achondroplasia is higher among the children of older fathers; approximately 50% of children with achondroplasia are born to fathers…An individual with 46, XX genotype is diagnosed with Duchenne-type Muscular Dystrophy, a recessive X-linked disorder. Genetic tests confirm that this individual is a heterozygote for this disorder. Briefly, but specifically, explain how it’s possible that they are showing symptoms of this disorder.X-linked ichthyosis is an X-linked recessive trait that manifests in part as dry, scaly skin (“ichthy-” = fish or fish like). Suppose a couple are considering having a child together. Parent A is heterozygous for the ichthyosis allele while Parent B is hemizygous negative for the ichthyosis allele. What is the probability their child would be unafflicted with ichthyosis but be a carrier of the ichthyosis-causing allele? a.0% b.25% c.50% d.75% e.100%
- Amelogenesis imperfecta (AI) is a disorder of faulty tooth enamel formation. It is inherited in an autosomal dominant and X-linked dominant pattern. The expression of AI disorder is determined by mutations in the autosomal alleles. One copy of the mutated allele (A) will cause the disorder. The severity of the disorder is determined by mutations in a gene carried on the X chromosome. Normal (or non-severe) abnormality (XN) is dominant over the abnormality (or severe) (Xn) allele. In the absence of the autosomal dominant allele, the abnormality gene on the X chromosome is notexpressed. Question:A woman with normal teeth had four children with a man with non-severe form of AI: A boy was born without amelogenesis imperfecta A girl was born without amelogenesis imperfecta A boy was born with severe amelogenesis imperfecta A boy was born with non severe amelogenesis imperfecta Identify the parental genotypes. Complete the Punnett square for the parental cross, and identify the possible…Amelogenesis imperfecta (AI) is a disorder of faulty tooth enamel formation. It is inherited in an autosomal dominant and X-linked dominant pattern. The expression of AI disorder is determined by mutations in the autosomal alleles. One copy of the mutated allele (A) will cause the disorder. The severity of the disorder is determined by mutations in a gene carried on the X chromosome. Normal (or non-severe) abnormality (XN) is dominant over the abnormality (or severe) (Xn) allele. In the absence of the autosomal dominant allele, the abnormality gene on the X chromosome is not expressed. Question:A woman with normal teeth had four children with a man with non-severe form of AI: A boy was born without amelogenesis imperfecta A girl was born without amelogenesis imperfecta A boy was born with severe amelogenesis imperfecta A boy was born with non severe amelogenesis imperfecta Identify the parental genotypes. Complete the Punnett square for the parental cross, and identify the…Amelogenesis imperfecta (AI) is a disorder of faulty tooth enamel formation. It is inherited in an autosomal dominant and X-linked dominant pattern. The expression of AI disorder is determined by mutations in the autosomal alleles. One copy of the mutated allele (A) will cause the disorder. The severity of the disorder is determined by mutations in a gene carried on the X chromosome. Normal (or non-severe) abnormality (XN) is dominant over the abnormality (or severe) (Xn) allele. In the absence of the autosomal dominant allele, the abnormality gene on the X chromosome is not expressed. Question:A woman with normal teeth had four children with a man with non-severe form of AI: A boy was born without amelogenesis imperfecta A girl was born without amelogenesis imperfecta A boy was born with severe amelogenesis imperfecta A boy was born with non severe amelogenesis imperfecta Identify the parental genotypes. Complete the Punnett square for the parental cross, and identify the…
- A boy with Klinefelter syndrome (47,XXY) is born to a mother who is phenotypically normal and a father who has the X-linked skin condition called anhidrotic ectodermal dysplasia. The mother’s skin is completely normal with no signs of the skin abnormality. In contrast, her son has patches of normal skin and patches of abnormal skin. (a) Which parent contributed the abnormal gamete? (b) Using the appropriate genetic terminology, describe the meiotic mistake that occurred. Be sure to indicate in which division the mistake occurred. (c) Using the appropriate genetic terminology, explain the son’s skin phenotype.Anhidrotic ectodermal dysplasia is an X-linked recessive disorder in humans characterized by small teeth, no sweat glands, and sparse body hair. This trait is usually seen in men, but women who are heterozygous carriers of the trait often have irregular patches of skin with few or no sweat glands (see the illustration below). a. Explain why women who are heterozygous carriers of a recessive gene for anhidrotic ectodermal dysplasia have irregular patches of skin lacking sweat glands. b. Why does the distribution of the patches of skin lacking sweat glands differ among the females depicted in the illustration, even between the identical twins?Hemophilia is another example of an X-linked disease caused when a recessive allele (Xh) is expressed. If a normal male reproduces with a heterozygous normal female, what are the expected genotypes and phenotypes? Will any of their daughters develop hemophilia?
- Wilma and Wally have one male child who has been diagnosed withDuchenne muscular dystrophy, an X-linked condition that results insevere atrophy of skeletal muscle. Neither parent has this condition.What is the probability that their next child will have Duchenne musculardystrophy?Neurofibromatosis-1 (NF1) is an autosomal dominant disorder where tumours form in the base layer of the skin or in nerve tissues. What is the probability that individuals II-1 and II-2 will have a genetic son with NF1? Find the image attached.If a gene is X-linked, explain why the recessive phenotype would be more often seen in males then in females. Also explain what the term “carrier” means related to these traits.