In Drosophila, the white gene located on the X chromosome affects eye color; an autosomal gene, wingless, is on an autosomal chromosome. Use the following allele symbols: Xw+ _ ,  Xw+Y = wild type red eyes; X-linked dominant allele Xw Xw , XwY = white eyes; X-linked recessive allele Y = Y sex chromosome vg+ = wild type wings; autosomal dominant vg = wingless; autosomal recessive Predict ratios/proportions of genotypes and phenotypes of offspring from the following cross, of a white-eyed male with wild type wings and a wild type red eyed female with wild type wings:  indicate sex of offspring along with phenotypes.                                        XwY vg+ vg             x           Xw+Xw vg+vg

Q: Amelogenesis imperfecta (AI) is a disorder of faulty tooth enamel formation. It is inherited in an…

A: Amelogenesis imperfecta A faulty tooth enamel formation. Dominant traits Autosomal dominant allele…

Q: X-linked ichthyosis is an X-linked recessive trait that manifests in part as dry, scaly skin…

A: If one allele is missing it is hemizygous. Heterozygous is the presence of two different alleles at…

Q: In this pedigree, affected individuals have a disease causing the inability to walk forward, called…

A: Genes are the hereditary unit of an organism. The genes have DNA (deoxyribonucleic acid) which code…

Q: In fruit flies, the autosomal recessive mutation pr causes brown eyes whereas the cn mutation causes…

A: A genetic characteristic or disease can be handed down from one parent to the next through autosomal…

Q: The following pedigree shows the inheritance of a human disorder. Affected individuals are shown…

A: A pedigree helps us to determine the inheritance of a trait across generations in a family.

Q: Regarding Mendelian inheritance in diploid individuals, (Read each statement carefully. Select all…

A: Ploidy is a term which describe the number of sets of chromosomes in a cell. The term haploid…

Q: Consider a couple: a woman who is homozygous for a recessive mutation that causes X-linked…

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A: The trait shown is inherited both autosomal dominant and X-linked; the presence of the dominant gene…

Q: Both red/green color blindness (R=normal, r=colorblind) and Duchenne-type muscular dystrophy…

A: X-linked recessive inheritance is the genetic condition that can be passed from parent to child…

Q: For the following diseases with their potential pedigree, mode of inheritance and the responsible…

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Q: Anhidrotic dysplasia (lack of sweat glands) is caused by loss-of-function of an X-linked gene. It is…

A: The female can be mosaic in nature. Because of presence of two X chromosomes. The one X chromosomes…

Q: (a) What pattern of transmission is most consistent with this pedigree? (1) autosomal recessive, (2)…

A: Pedigree  A family tree or chart that represents a person's genetic family history by symbols and…

Q: Pompe disease is a glycogen storage disorder caused by a lack of ⍺-glucosidase, the enzyme that…

A: Introduction  A rare disorder called glycogen storage disease (GSD) affects how the body consumes…

Q: Draw a Punnett square for the dihybrid cross. There are two known alleles of gene occupying a…

A: Dihybrid cross involves two genes in a cross. That's why the two traits are involved in this cross.

Q: Pompe disease is a glycogen storage disorder caused by a lack of a-glucosidase, the enzyme that…

A: Alleles are the  alternative form of a gene that are located on the same locus of homologous…

Q: Raspberry eyes (ras) is a sex-linked recessive trait in Drosophila. Eyeless (ey) is an autosomal…

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Q: Neurofibromatosis-1 (NF1) is an autosomal dominant disorder where tumours form in the base layer of…

A: The probability is 1/4

Q: Greg and Susan have Nail- Patella syndrome (NPS). NPS is an autosomal dominant. Greg has a blood in…

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Q: In humans, blue eyes are inherited as a recessive autosomal trait and color blindness is an X-linked…

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Q: The following Pedigree shows an unknown genetic disorder. The disorder is believed to be caused by…

A: In terms of genetics, a pedigree is a diagram demonstrating the manner in which a trait or medical…

Q: Amelogenesis imperfecta (AI) is a disorder of faulty tooth enamel formation. It is inherited in an…

A: Genes are the unit of inheritance that transfers traits from one generation to another. Genes coding…

Q: an unaffected woman who is heterozygous for the x linked allele causing duchenne muscular dystrophy…

A: Inheritance is the process of transmitting the traits from parent to offspring. Traits of an…

Q: The pedigree shows inheritance of an autosomal recessive disease in an extended family. Assume…

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Q: Albinism and sickle cell anemia are both autosomal recessive disorders that are expressed only in…

A: Albinism - genotype be A and a.  aa is diseased, Aa is the carrier and AA is not affected.  Sickle…

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Q: Both hemophilia (h) and favism (gd) are inherited as X-linked recessive traits. Hemophilia is an…

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Q: In humans, hemophilia is an X-linked recessive disorder that affects the gene for factor VIII…

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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: The pedigree below represents the inheritance of a rare genetic disorder (members joining the…

A: The answer is written in explanation box below:Explanation:…

Q: Suppose gene B is X-linked and is embryonically lethal when homozygous or hemizygous recessive. A…

A: Let us first discuss the terms used in the question, Homozygous:- A condition when two copies of an…

Q: Tightly curled hair is caused by a dominant autosomal gene in humans. If a heterozygous curly-haired…

A: The major traits of Autosomal inheritance is : trait should not skip generations as well as the…

Q: Consider the following pedigree, which traces the inheritance of a single-gene hereditary disease.…

A: Single gene herediary diseases are mainly caused by a change of any one gene in a particular DNA.Its…

Q: Amelogenesis imperfecta (AI) is a disorder of faulty tooth enamel formation. It is inherited in an…

A: Amelogenesis imperfecta (AI) is a disorder of faulty tooth enamel formation. It is inherited in an…

Q: Sickle cell anemia is inherited as an autosomal recessive condition. It also exhibits incomplete…

A: Sickle cell anemia (SCA) is a genetic disorder that occurs when an individual has two homozygous…

Q: A) Calculate the map distance separating the three genes B) Which gene is in the middle?

A: Symbol  white eyes = r short wings = l  ebony bodies = g    red eyes = R long wings = L  Gray bodies…

Q: Draw a Punnett square for the dihybrid cross described below (it is the same story as given for…

A: X linked characters are those where the the gene in question is located on the X chromosome. Females…

Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.