Fat mice can be produced by two independent genes. The "oo" genotype generates a fat and sterile mouse, called obese; its dominant "O" allele results in normal growth. The recessive "aa" genotype also produces a fat, sterile mouse called adipose, while its dominant allele causes normal growth. What phenotypic ratios of fat versus normal mice can we expect in F1, being the parents of the OoAa genotype?

Q: Two genes control color in corn snakes as follows:O– B– snakes are brown, O– bb are orange, oo B–…

A: A gene is the physical and functional unit of heredity. They pass information from one generation to…

Q: Hemophilia is a X-linked/sex linked recessive trait in humans. The dominant allele (H) causes normal…

A: Himophilia is the disorder related to blood clotting. it is sex linked recessive disorder. So only…

Q: Glucose-6-phosphate dehydrogenase deficiency (G6PD) is inherited as an X-linked recessive gene in…

A: Glucose 6-phosphate dehydrogenase deficiency is inherited as an X-linked recessive gene. Woman has…

Q: In dogs, wire-haired (H) is dominant to smooth-haired (h). In a cross of a homozygous wire-haired…

A: Gregor Johann Mendel was the first person who discovered the basic principles of heredity during the…

Q: Achondroplasia is a form of dwarfism caused by a dominant, autosomal allele that diminishes bone…

A: Achondroplasia: Achondroplasia is a genetic condition characterised by dwarfism as its predominant…

Q: In humans, the genetic disease cystic fibrosis is caused by a recessive allele (a). The normal…

A: Cystic fibrosis is only caused when both of the mutant alleles for cystic fibrosis are present. AA…

Q: In humans, the ABO blood type is under the control of autosomal multiple alleles. Color blindness is…

A: The ABO blood type system is an example of multiple alleles in which three alleles iA, iB and iO…

Q: ake the example of B-thalassemia, an autosomal recessive genetic disease that particularly affects…

A: A point mutation is a change in the single nucleotide pair of DNA.

Q: In humans, the ABO blood type is under the control of autosomal multiple alleles. Color blindness is…

A: Genes are the specific codes of these amino acids which produces a protein and alleles is the…

Q: Color-blindness (c) is a sex-linked recessive trait, while normal color vision (C) is dominant:  If…

A: Color blindness is a genetic disorder in which a person is not able to see differences in color. The…

Q: In the Bombay phenotype, a homozygous recessive individual hh appears to have blood type O because…

A: It is a multiple choice question.

Q: The condition phenylketonuria is caused by a recessive allele. There are two carriers who have…

A: Phenylketonuria (PKU) It is an autosomal recessive condition that causes mental impairment owing to…

Q: In the human pedigree shown below, black filled symbols indicate individuals suffering from a rare…

A: The mode of inheritance is a pattern of obtaining parentral alleles  or genes to the offsprings. The…

Q: Red-green color blindness is inherited as an X-linked recessive (Xc).  If a color-blind man marries…

A: Heterozygous means an individual having two different alleles of a gene. (In this case, the woman is…

Q: In humans, curly hair is dominant to straight hair. A woman heterozygous for curly hair marries a…

A: Curly hair DOMINANT TRAIT: 'C' Homozygous recessive 'cc' Heterozygous 'Cc' Homozygous Dominant 'CC'…

Q: The autosomal (not X-linked) gene for brachydactyly, short fingers, is dominant to normal finger…

A: Given: The autosomal (not X-linked) gene for brachydactyly, short fingers, is dominant to normal…

Q: When phenylalanine is converted to phenylpyruvic acid, this molecule accumulates in the body and…

A: For this we will use binomial expression  P = n!/ x! (n-x!) * pxq(n-x)

Q: Phenylketonuria (PKU) is a disease that results from a recessive gene.Suppose that two unaffected…

A: Phenylketonuria (PKU) is a genetic disorder that arises due to a mutation in the PAH gene.   it is a…

Q: A husband and wife have typical vision, although both of their fathers are red-green colorblind (an…

A: It is an inheritance of an X-linked recessive condition.  In the recessive condition, only one…

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: Albinism is a recessive disorder where there is a lack of melanin. Andrea and her husband Claude…

A: Given information Albinism is a recessive disorder.  Andrea and Claude both have normal skin…

Q: Holstein cattle suffer from the condition citrullinemia, in which homozygous recessive calves die…

A: Citrullinemia is the condition where ammonia and other toxic substsances acumulates in the body. It…

Q: Oculocutaneous Albinism is an inherited autosomal recessive condition caused by a mutation in the…

A:

Q: Skin color in humans is determined by polygenic inheritance, which means the more dominant alleles…

A: Polygenic inheritance: - in this inheritance, more than one genes control the single characteristic.…

Q: cats, a sex-linked recessive allele, d, results in dystrophin-deficient muscular dystrophy. Its…

A: In this case mother would be heterozygous for polydactyly because she transfer f  allele to male…

Q: What is the approximate percentage chance that individual V.2, shown in the pedigree diagrams above…

A: A recessive attribute is one that may be detected within the relationship between 2 variants of a…

Q: The fly with vestigial wings is crossed with the fly with normal wings shown in the upper-right…

A: The length of wings in Drosophila is determined by the wing length gene. There are two distinct…

Q: In Drosophila, gray body color is dominant to ebony body color, while long wings are dominant to…

A: Drosophila study experiments Gray body colour - dominant -E Ebony body colour- recessive- e long…

Q: In humans, the mic2 gene (involved in antibody production) is found on sex chromosomes and has…

A: The pseudoautosomal inheritance is observed for the allele in the identical regions of X and Y…

Q: Phenylketonuria (PKU) is a disease that results from a recessive gene. Suppose that two unaffected…

A: Phenylketonuria (PKU) is a genetic disorder that arises due to a mutation in the PAH gene. it is a…

Q: An allele for coat color in mice, Y, produces a yellow coat color when present. The phenotypes of…

A: The combination of some of the alleles show lethal phenotype.

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: Along with the trait in the pedigree, individual IV-6 and the woman are also both heterozygous for…

A: A pedigree is a genetic representation of a family tree that shows how a trait or disease is passed…

Q: What is the probability that a child will test as type A blood from parents with the following…

A: A cross is the mating between two individuals leading to the fusion of gametes and resulting in…

Q: In Drosophila, ebony body colour is produced by a recessive gene a and wild-type (gray) body colour…

A: Answer: DIHYBRID CROSS : It is the cross made between two traits of an individual.

Q: What progeny would result from crossing a homozygous rose-combed hen with a homozygous pea-combed…

A: A gene is a unit of genetic material and alleles are the alternative form of genes present on the…

Q: In rabbits, the coat color black dominant (B) over brown (b). Short hair is dominant (S) over long…

A:

Q: In humans, ABO blood types refer to glycoproteins in the membranes of red blood cells. There are…

A: There are 4 different blood groups present in the organisms. These blood groups are: A, B, AB and O.…

Q: The lubber grasshopper is a very large grasshopper, and is black with red and yellow stripes. Assume…

A: The lubber grasshopper is black colored with red and yellow stripes. Red stripes occur from…

Q: Cystic fibrosis is a recessive human condition. A male with Cystic fibrosis and a woman with a…

A: As Cystic fibrosis is a recessive human condition. So, mother must carrier at least to displays…

Q: The long hair of Persian cats is recessive to the short hair of Siamese cats, but the black coat…

A: Alleles for the characterstics od hair and coat color in persian cat.   Long hair- ll Short hair- LL…

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

A: Father genotype:-    AaSs Mother's genotype:- AaSs Aa-Albinism carrier Ss-Sickle cell anemia carrier…

Q: A husband and wife have typical vision, although both of their fathers are red-green colorblind (an…

A: X-linked red-colour blindness is a recessive trait. Females heterozygous for this trait have normal…

Q: In humans, the gene for albinism (a) is recessive to the gene for normal skin pigmentation (A).…

A: An allele is a variant form a gene and is present in two forms: dominant and recessive. The dominant…

Q: The long hair of Persian cats is recessive to the short hair of Siamese cats, but the black coat…

A: Introduction  A gene is consisting of a pair of alleles/factors and can be dominant or recessive. A…

Q: Duchenne muscular dystrophy is an inheritable disorder that results in muscle weakness, leading to…

A: Duchenne muscular dystrophy This is an X-linked recessive disease. This genetic disorder is…

Q: The dominant form of Enzyme 1 makes blue pigment. However, individuals with this allele only have…

A: The mode of inheritance is a pattern of obtaining parentral alleles  or genes to the offsprings. The…

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.