brown eyes (B) are dominant over blue. A brown eyed man marries a blue-eyed (b) woman and they have three children two of whom are brown-eyed and one of whom is blue-eyed. if the male has brown eyes but has a blue-eyed child, what must his genotype be

Q: Farmer Brown had two hogs, Olga and Hank.  Olga and Hank were normal, healthy hogs, but whenever…

A: Ogla and Hank must be both heterozygous for the condition. That is why they are producing some…

Q: In humans, baldness (Xᵇ) is a recessive sex-linked trait. Two people with normal hair (Xᴮ) have a…

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

Q: A man with the II (A) blood group and a woman with the III (B) blood group in the AB0 system have…

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

Q: In humans, brown eyes (B) are dominant over blue. A brown eyed man marries a blue-eyed (b) woman and…

A: Genes are the functional unit of heredity. It carries information that is transferred from one…

Q: A human female who is heterozygous of the sex-linked trait causing red-green color blindness marries…

A: As a sex-linked characteristic, colour blindness is caused by a gene which is found on the sex…

Q: A heterozygous green eyed monster is crossed with a purple eyed monster. a)What proportion…

A: Organisms can be homozygous or heterozygous for a gene. An organism can be homozygous dominant if it…

Q: In humans, six fingers (F) is dominant to five fingers (f). Assume both parents are heterozygous for…

A: The presence of 6 fingers is dominant over the presence of 5 fingers.

Q: Two parents with blood types A and B have a child who has O blood type. What is the chance that…

A: Blood group of an individual can be determined by presence/ absence of antigens on RBC surface while…

Q: Colorblindness is a sex-linked trait.  If a heterozygous female crosses with a colorblind male, what…

A: It is a sex-linked recessive disorder caused due to the defect in either red or green cone of eye…

Q: A man who is red-green color-blind marries a woman who is neither color-blind nor a carrier for this…

A: colour blindness - Colour blindness is a usually a  hereditary condition . Red  or  blue colour…

Q: Gene A has three possible alleles (A1, A2, A3), gebe B has four possible alleles ( B1 - B4), and…

A: The hereditary currency of a cell is the gene. Every gene carries the genetic information from the…

Q: What kind of polymorphism is most likely represented?

A: In genetics, polymorphism is said to be when more than one allele occupies the gene locus within a…

Q: When you interlace your fingers, your left thumb falls over your right thumb. So you have the…

A: In dominant-recessive conditions, the dominant phenotype masks the recessive phenotype, hence the…

Q: Suppose that a woman having normal vision and a man  having normal vision have a son who is…

A: Colorblindness is an X linked recessive disorder. It means that for a male to have the disorder,…

Q: Consider the cross of a homozygous white & horned male with a homozygous black & hornless female.…

A: Given that white coat (W) is dominant over black coat (w). Also, horns are dominant in males and…

Q: In humans, brown eyes (B) are dominant over blue. A brown eyed man marries a blue-eyed (b) woman and…

A: The phenotype of an individual is determined by his or her genotype. The genotype is determined by…

Q: Curly hair (C) is dominant to straight hair (c). Is it possible for a curly haired man to produce…

A: Curly hair is inherited as an autosomal dominant trait, meaning that one parent has straight hair…

Q: A person is heterozygous for the Freckles phenotype (Ff) and also heterozygous for the PTC-tasting…

A:

Q: In mice the autosomal genotype yy is for gray fur, YY is for brown fur and Yy is for yellow fur.…

A: DNA ( deoxyribonucleic acid) is the genetic material that the organism inherits from the parental…

Q: What is most likely the woman's genotype?

A: The human blood group system is classified based on the ABO blood group system. Thi is mainly done…

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: John Legend and Chrissy Teigen are looking to have another child. However, they’re wondering how…

A: When only one single traits are compared in a punnet square, it is said to be a monohybrid cross.…

Q: In guinea pigs, the allele for short hair is dominant. If all the guinea pigs are born short haired…

A: The two possible genotypes of the parents are:

Q: If a man who has blood type AB marries a woman who is heterozygous for blood type A, which genotype…

A: Blood group inheritance is a kind of inheritance of multiple alleles which involves three alleles…

Q: The genes for the eye-color of fruit flies are located in their X chromosome, or X – linked. (R…

A: According to the question, we have to answer the following questions -  The genes for the eye color…

Q: In a cross between fair skin, black hair (heterozygous for all these traits) with brown skin, red…

A: The genes are found on different chromosomes, occasionally far apart, but on the same chromosome,…

Q: (A) You cross a true-breeding yellow-bodied, smooth-wing female with a true-breeding red-bodied,…

A: The genotype of the flies can be represented as: Yellow bodied and smooth wing = WWbb Red bodied and…

Q: the A and the S alleles are co-dominant. What is the phenotype of a heterozygote (AS)?

A: Codominance is a genetic concept where two different alleles of a gene are equally expressed in a…

Q: i) Assuming brown eyes (E) are dominant over blue eyes (e), determine the genotypes of all the…

A: Genotype is the representation of alleles in an organism. Phenotype is the trait expressed by the…

Q: What is the phenotype and genotype of offspring in the following conditions? (use the Punnett…

A: ABO blood group system consists of four types of blood groups - AB, O, A and B. ABO blood group is…

Q: A woman with blonde hair and blues eyes, which are recessive genes, marries a heterozygous man who…

A: Traits are characteristic features that are unique to particular individual . As per the question ,…

Q: A man with AB blood type marries a woman with O blood type. What is the expected phenotypes (use…

A: Allele for blood group AB are IAIB  And allele for blood group O are ii When we cross man with AB…

Q: Your significant other is a big fan of hamsters due to their appearance and you eventually gift them…

A: The probability of any genotype or phenotype can be calculated with the help of punnet square  For…

Q: n cattle, having spots (s) is recessive to being a solid color (S). If two cattle that are…

A: When a trait or allele is considered to be recessive it is not expressed in the presence of the…

Q: In a cross between fair skin, black hair (heterozygous for all these traits) with brown skin, red…

A: A genetic trait is considered dominant if it is expressed in a person even in its single copy. While…

Q: Two goats are mated together. One is tall and brown and of unknown genotype. The other is a short…

A: Introduction :  A test cross is defined as a cross which is used to test whether an individual is…

Q: Hemophilia is a disease caused by a recessive allele (h), which is found on the X chromosome,…

A: Given that, hemophillia is X-linked recessive disorder. Also, a normal man marries a woman that is…

Q: In guinea pigs, the gene for black coat color is dominant to the gene for white coat color. What…

A: The transfer of character from parents to offspring is known as inheritance. The genes for coat…

Q: In humans brown eye color is dominant to blue eye color. Suppose that your mother is homozygous and…

A: The word genotype refers to an organism's full collection of genes found in its cells. In a more…

Q: When pure breeding red dragons with large wings are mated with pure breeding green dragons with…

A: Let ‘R’ represent the red color allele and ‘r’ represent the green color allele.  Also, Let ‘L’…

Q: In pea plants, smooth peas is dominant to wrinkled peas. When Mendel crossed true breeding smooth…

A: Let us assume the dominant smooth character of peas is represented by (S) while the recessive…

Q: If a girl has blood type B and her mother has blood type A, what genotype(s) and corresponding…

A: Blood group is determined by the type of antigen present on the RBC. If antigen A is present then…

Q: In humans, blood type AB is a codominant trait.  Suppose Jim has blood type AB (IAIB) and his wife…

A: Blood group is controlled by three alleles: iA, iB and i.  The iA and iB are Codominant to each…

Q: A woman with a colorblind father marries a colorblind man. What would be all possible genotypes and…

A: ANSWER) The possible genotypes would be- XcXc, XcY, XcX, XY Possible phenotypes would be 50% of the…

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.