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 probability that they have a colorblind child?

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: 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: Albinism is an autosomal (not sex-linked) recessive trait. A man and woman are both of normal…

A: Introduction Albinism Is A Genetic Condition That Causes A Person's Skin, Hair, And Eyes To Be…

Q: The mode of inheritance of the auricular hypertrichous trait in the Brown family is clearly an…

A: A genetic disorder known as auricular hypertrichosis manifests as strong, long hairs emerging from…

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: Hemophilia A, a condition in which blood does not clot properly, is a recessive trait located on the…

A: INTRODUCTION: It is given that a woman who is heterozygous for hemophilia A (XX h) marries with a…

Q: What kind of sight is expected in the children from this marriage?

A: Daltonism is also known as deuteranopia which is a rare form of color blindness. In this form, the…

Q: Hemophilia is a disease caused by a gene found on the X chromosome. Therefore, it is a sex-linked…

A: If the woman  gets the X chromosome with the hemophilia gene, she will have hemophilia . A man who…

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

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

Q: Red-green color blindness is an X-linked recessive disorder.  If Allison is heterozygous (a…

A: Introduction: Color blindness is an inherited sex-linked disorder that affects the  ability of…

Q: Julie (a female) has hemophilia. Based on this information, what can we say about the genotypes of…

A: Introduction X-linked diseases are those that occur due to the presence of abnormal/ diseased…

Q: Male pattern baldness is inherited on the X chromosome. The allele for baldness is designated Xb,…

A: Baldness refers to the complete loss of hairs that leads to a visible scalp. If hair loss gets…

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

A: Hemophilia is a disorder where blood clots do not form normally which leads to excessive bleeding…

Q: In beetles, an X-linked gene determines body size, with normal size (M)completely dominant to…

A: A genetic cross is an experimental breeding process performed to understand the patterns of…

Q: arts a) through c) below. ays written with the dominant gene first. Therefore, there a nd the father…

A: Sickel cell anaemia is an autosomal recessive. Nomal allele=S Sickle cell anaemia =s

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

A: 50 percent chances.

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: 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: In humans, being right-handed (R) is dominant over being left-handed (r), and normal vision is…

A: Right handed = RR, Rr Left handed = rr Colour blind = XcXc, XcY Normal vision = XX, XY, XcX

Q: Albinism is a recessive trait. Two individuals who both have normal pigmentation have one child out…

A:

Q: Red-green colorblindness is due to a sex-linked recessive gene. If two normal parents have a…

A: The traits can be defined as the phenotypic characteristics that are coded by the genes. The genes…

Q: Sex-linked inheritance involves the genes on the sex chromosomes. Because inheritance patterns…

A: X-linked diseases is those diseases that are caused by traits that are present in X-chromosomes.…

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…

A: Introduction  The nails, knees, elbows, and pelvis are abnormal in people with nail-patella…

Q: A WOMAN IS HETEROZYGOUS FOR TWO HARMFUL RECESSIVE ALLELES IN DIFFERENT CHROMOSOMES, ONE FOR…

A: Autosomal recessive traits refers to the pattern of inheritance in which both the mutated alleles of…

Q: In humans, color vision depends on genes encoding three pigments. The R (red pigment) and G (green…

A: The inheritance of color vision in humans depends upon three main genes that code for three…

Q: If a father has Marfan syndrome, a dominant disorder, and passes it down to all of his children, but…

A: The skeleton, blood vessels, heart, and eyes are all impacted by Marfan syndrome. Marfan syndrome…

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: 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: If a color blind woman is married to a man with normal vision, what are the chances that the…

A: Color blindness is an X-linked recessive disorder, in which a person has decreased the ability to…

Q: Classical hemophilia is a sex-linked disease caused by a recessive gene on the X chromosome.…

A: Hemophilia is a X linked recessive trait.  Let X allele encodes normal phenotype. And it is dominant…

Q: A woman with keratosis, a skin condition caused by a rare dominant allele, marries a man with normal…

A: Keratosis is a general term used to describe a group of skin conditions characterized by the buildup…

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: 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: 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: Red-green colorblindness in humans is caused by a sex-linked recessive allele. A color-blind man…

A: A Punnett square is a diagram used to predict the possible genotypes and phenotypes of the offspring…

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: A karyotype shows that a child has Klinefelter syndrome (47,XXY). If the child is also colorblind…

A: Karyotyping is the process of taking photographs of chromosomal pairs to determine the number of…

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…

Communication

Communication is a method of transferring information between two persons or organisms. Communication is possible using mutually understood behaviors such as signs, symbols, or language. In the year 1980, S. F. Scudder proposed communication theory. According to his ideas, all living beings on the earth communicate, but the methods of communication differ. Communication skills are now part of soft skills.