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%

Q: cance of color blindness in humans is due to a recessive gene located on the X chromosome X linked).…

A: Mother     ×      father            XXc                  XcY Progeny -      X Xc Xc XXc…

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: Color blindness is a recessive X-linked trait. A normal couple has a color-blind child. At least one…

A: Introduction When Compared To The Standard For Normal Human Colour Vision, Colour Blindness Is…

Q: Achondroplasia, which is characterized by difficulty converting cartilage to bone and thus results…

A: Hhsbanf is colorblind i.e XcY  Wife is carrier as their son and daughter both are affected .i.e XCX…

Q: A man, Penoy, whose sister died in early childhood from a recessive lethal disease marries a woman…

A: In the given scenario, as the male survived beyond childhood but is a carrier of the disease, it…

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: Bob and Joan know from a blood test that they are each heterozygous (carriers) for the autosomal…

A: A group of disorder that affects the hemoglobin is said to be sickle cell disease. An individual…

Q: A couple is both heterozygous for the autosomal recessive disease cystic fibrosis (CF). What is the…

A: Autosomal recessive inheritance pattern is a type of inheritance pattern in which the disease is…

Q: Red–green color blindness is an X-linked recessive trait. Susan has normal color vision, but her…

A: Color blindness is defined as the inability of the person to distinguish between colors, especially…

Q: In humans, hemophilia is a sex-linked recessive disease, and the gene is located on the X…

A: Answer: HEMOPHILIA = It is the chromosomal disorder , which sex-linked recessive disease, men are…

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 form of hemophilia is caused by a sex-linked (X-linked) recessive gene. A phenotypically normal…

A: 50 percent chances.

Q: Hemophilia is an X-linked recessive disorder and blood type is autosomal.  If two healthy parents,…

A: Introduction  X linked inheritance is based on the sex chromosome (X chromosome). This inheritance…

Q: Achondroplasia, which is characterized by difficulty converting cartilage to bone and thus results…

A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous…

Q: Cystic fibrosis is a disease that is passed down through the generations. The recessive alleles for…

A: Genes carry the traits from one generation to another. Genes that code for different forms of a…

Q: Wild-type giraffes have long necks. Below is a pedigree of a family of giraffes that has a history…

A: The Pedigree shown here is based on autosomal recessive inheritance pattern which means that the…

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

A: The probability is 1/4

Q: Bryan has albinism, an autosomal recessive trait, which means he is homozygous recessive for…

A: Ans: Albainism is an autosomal recessive disorder. For this disease to develop two copies of an…

Q: In humans, hemophilia is a sex-linked recessive disease, and the gene is located on the X…

A: Hemophilia is a sex-linked recessive disease. This means that in order to produce a diseased…

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

A: The objective of this question is to determine the probability of this couple having a son with…

Q: Duchenne muscular dystrophy (DMD) is an example of an X-linked trait. This is a neuromuscular…

A: Duchenne muscular dystrophy (DMD) is an example of an X-linked trait. This is a neuromuscular…

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

A: Although the trait is skipped in the pedigree, autosomal recessive inheritance is discovered. The…

Q: Albinism is an autosomal recessive condition characterized by absence of melanin pigment from the…

A: Albinism is a group of genetic disorders characterized by a lack of melanin, the pigment that gives…

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

A: Genetic disorders can be inherited either through recessive or dominant mutation. In case of a gene…

Q: Hemophilia is another example of an X-linked disease caused when a recessive allele (Xh) is…

A: Hemophilia is a bleeding disorder;which shows X linked recessive pattern of inheritance as the…

Q: Hemophilia is a disease inherited as a X-linked recessive trait while pattern baldness is controlled…

A: Haemophilia is a X-linked recessive trait, and baldness is an autosomal recessive trait. The…

Q: Y-linked Amelogenesis imperfecta (A), a congenital disorder that affects the formation of the teeth…

A: Given: Amelogenesis imperfecta, Y-linked (A) congenital disorder. Hypophosphatemia (H) X-linked…

Q: Charles has achondroplasia dwarfism (autosomal dominant) but his wife is normal. What is the…

A:

Q: Hemophilia is an X-linked recessive gene. A normal woman who is a carrier for hemophilia marries a…

A: Hemophilia is a disorder in which blood can’t clot properly, excessive bleeding (external and…

Q: A form of hemophilia is caused by a sex-linked (X-linked) recessive gene. A phenotypically normal…

A: The father is a haemophiliac given by recessive genotype Xh Y , The daughter of this person is…

Q: Hemophilia is a X-linked genetic disorder causing blood clotting problem. A dominant allele on the X…

A: The alleles are generally of dominant and recessive type and some other forms like codominant are…

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…

Stress

Stress is defined as the feeling of being overwhelmed or unable to cope with emotional or mental pressure. Any event or action that makes a person annoyed, furious, or nervous can trigger it. Chemical changes in the body caused by stress can cause blood pressure, blood sugar levels, and heart rate to rise.