A woman heterzygous for color blindness (an X-linked recessive allele) marries a man with normal color vision. What is the probability that their first child (male or female) will be color blind?   25%   75%   50%   0%   100%

Q: Red-green colour blindness is a sex-linked trait. Red-green colour blindness (Xrg) is the inability…

A: Color blindness occurs when you are unable to see colors in a normal way. It is also known as color…

Q: The gene for red-green colour vision is carried on the X chromosome. If the gene is faulty, colour…

A: Homozygous dominant is represented by both capital letters such as TT for tall.Heterozygous dominant…

Q: Cystic fibrosis (f) and deafness (d) are caused by two unlinked autosomal recessive alleles, and…

A: Cystic fibrosis (f) and deafness (d) are caused by two unlinked autosomal recessive alleles, and…

Q: Phenylketonuria (PKU) is a recessive disorder that neither Ginny or Harry have. Unfortunately, their…

A: The absence or mutation in the enzyme phenylalanine hydroxylase humans is not able to metabolism or…

Q: Muscular Dystrophy is an X linked recessive disease. Maria and Nick are getting genetic counseling…

A: Answer : Given that, Muscular Dystrophy is an X linked recessive disease, this means the disease…

Q: What is the probability that their next child will be affected?

A: Cystic fibrosis is an inherited disease that leads to affecting the glands which results in mucus…

Q: Huntington's disease is a late-onset autosomal dominant disorder. What is the chance that a…

A: Hungtington disease is a brain disorder that causes uncontrolled movements, loss of thinking…

Q: Two people heterozygous for Tay-Sachs (recessive disease) have two children who are both normal.…

A: Tay-Sachs is a genetic disorder. It is inherited only when both parents carry the gene for…

Q: A woman who is phenotypically normal is married to a phenotypically normal man. Her maternal…

A: Introduction X-linked Inheritance Means That The Gene Causing The Trait Or The Disorder Is Located…

Q: Red-green color blindness in humans is caused by a recessive allele on the X chromosome. If a woman…

A: Colour blindness is the in ability to see or cannot differentiate between two colours. This is…

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

A: 50 percent chances.

Q: Given the situation: both parents are heterozygous for cystic fibrosis, what is the probability of…

A: Cystic fibrosis is an autosomal recessive disease. This means if both the recessive copies of the…

Q: If a pure breeding(homozygous) black(dominant), longhaired (recessive) cat is made of pure breeding…

A:

Q: What will be the sex of an individual who is easily affected by an X-linked recessive trait? Why?

A: Sex chromosomes carry the genes to determine the gender of an organism.

Q: A female has a family history of Duchenne muscular dystrophy, a recessive sex- linked condition that…

A: Since, the disorder is sex linked recessive, we have,  Genotype of affected female - XDXD Genotype…

Q: Zoe's parents were both heterozygous for the recessive cystic fibrosis allele. Zoe has cystic…

A: Cystic fibrosis is an Autosomal recessive inheritance. It is encoded by the genes present on the…

Q: An individual that is genetically male develops as a female. Is this individual more or less likely…

A: The males have one X chromosome and one Y chromosome and the females have a pair of X chromosomes.…

Q: A type of red-green colorblindness is inherited recessively on the X chromosome. A woman   who is…

A: Color blindness is sex-linked recessive disorder. A person is said to be color blind if he is not…

Q: Omar and Aleema are expecting a baby and discover they are both carriers for the autosomal recessive…

A: Sickel cell anemia is disorder of blood where yhe red blood cells are irreguliriay shaped (cresecnt…

Q: A female carrier of red-green color blindness will pass her recessive allele on to:

A: The X chromosome is where the red-green colour blindness gene is located, making it an X-linked…

Q: How can a female carrier of an X-linked recessive disorder have a daughter who is affected?

A: The transmission of X-linked disorders takes place by passing the defected X chromosome to the…

Q: What is the probability that a color-blind woman who marries a man with normal vision will have a…

A: Color blindness is a condition which is passed on genetically. In this condition it is difficult for…

Q: Huntington's disease is characterized by a late onset of nerve degeneration that leads to death.…

A: Huntington's disease is caused by the dominant allele as given in the question.

Q: Tay-Sachs disease is a recessive genetic disease. Two individuals, both of whom are heterozygous for…

A: Inheritance is the process of transmitting genes that encode a particular trait from parents to…

Q: Choose an example of a host adaptation that may not look advantageous at first, but was determined…

A: Good day! Kindly refer to the answer and explanation provided below. Please feel free to ask should…

Q: Red-green colour blindness is a sex-linked trait. Red-green colour blindness (Xrg) is the inability…

A: A structure of colorblindness in which red and green are saw as indistinguishable. This is the most…

Q: Unattached earlobes is dominant to attached earlobes. Two parents, both with unattached earlobes,…

A: The answer is 25%

Q: A couple who is heterozygous for simple recessive albinism (no epistasis here) plans on having 2…

A: The parents of a child having autosomal recessive albinism have one copy of the mutated gene. The…

Q: A woman heterozygous for color blindness (an X-linked recessive allele) marries a man wit normal…

A: Color blindness is linked to the defects within the x chromosome. For Color blindness to occur it…

Q: How can a female carrier of an X-linked recessive disorder have a daughter who is affected?

A: Recessive inheritance indicates both genes in a pair abnormal to cause disease, with only one…

Q: When looking at an X-linked recessive trait, if an affected mother and an unaffected father have a…

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

Q: cystic fibrosis is an inherited disease caused by a recessive gene allele. If a woman and man who…

A: Cystic fibrosis is caused by mutations in the gene that produces the cystic fibrosis transmembrane…

Q: at least 1 child with attached earlobes

A: Homozygous individuals mean there is a pairing of the two same types of alleles and both of the…

Q: Red-green colour blindness is a sex-linked trait. Red-green colour blindness (Xrg) is the inability…

A: Given: Red-green color blindness is a sex-linked trait. Red-green colour blindness (Xrg) is the…

Q: A recessive allele on the X chromosome is responsible for red-green color blindness in humans. A…

A: The colorblindness is encoded by the genes present on the X chromosome.

Q: healthy/non-carrier woman, what is the probability of them having 4 healthy children? ther suffered…

A: X-linked diseases are passed from the father to the daughter, if Eloise's grandmother had an…

Q: A female has a family history of Duchenne muscular dystrophy, a recessive sex- linked condition that…

A: Sex linked recessive: 1. In case of sex linked recessive disease trait should skip generation. 2.…

Q: A couple is going to have a baby. They are concerned about sickle cell anemia, which results from…

A: Sickle cell anemia results from having the homozygous recessive combination of the sickle cell gene…

Q: A color blind (X linked recessive) female marries a normal male. What percent of her daughters will…

A: Color blind is defined as a condition where there is an inability to differentiate between shades of…

Q: What is the probability that they will have a baby boy with brown eyes and cleft chin Parents…

A: Dominant genes are trait which hides or cover up expression of recessive genes. There are three…

Q: The gene for black hair (B) is dominant over the recessive gene for blond hair (b). If the father is…

A: As given that the gene for black hair (B) is dominant over blonde hair recessive gene (b). It means…

Q: The gene for black hair (B) is dominant over the recessive gene for blond hair (b). If the father is…

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

Q: What would be the expected phenotypes and genotypes of the children when a color blind man marries a…

A: Colorblindness is an X-linked recessive trait. It is more common in males than in females because…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.