The eye ring color in wood ducks is under the control of a single, sex linked gene.  The dominant allele (R) produces a white eye ring and the recessive allele (r) produces a green eye ring.  Provide the results to the following crosses (note birds have ZZ:ZW sex determination). a)  Provide the phenotypes and phenotypic ratios of a cross between a female with a white eye ring and a male with a green eye ring. b)  Determine the phenotypes and phenotypic ratios for a cross involving an F1 female and an F1 male from the above cross.

Q: A geneticist crosses two yellow mice with straight hair and obtains the  following progeny:  1/2…

A: Genetic is the branch of science that deals with genetic material like genome, genes, DNA, and…

Q: If 2 spot (S) is dominant to 4 spot (s), give the genotypes for the parents in the following…

A: Different versions of a gene are called alleles.  Alleles are described as either dominant or…

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: 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: Following a cross between two, dihybrid, heterozygous individuals, what fraction of the offspring…

A: In the question, it is given that the cross is made between the two dihybrid heterozygous…

Q: For the pedigree shown here, the disorder is caused by a recessive (g) autosomal allele. Label each…

A: A tree made of lines and symbols representing the genetic history of person's family is known as a…

Q: In a species of bird, feather colour is determined by a single, non-autosomal gene that shows…

A: Given  Feather colour is non autosomal means it is sex based charecter. Parent phenotype  Female -…

Q: Three autosomal recessive mutations in yeast, all producing the same phenotype (m1, m2, and m3), are…

A: An autosomal recessive mutation means two copies of an abnormal and defective gene must be present…

Q: A woman with fair skin, blond hair, and blue eyes gives birth to fraternal twins; the father has…

A: The answer is here

Q: Purple flowers are dominant to white flowers. Identify the phenotype for the following genotype Ff,…

A: The genetic traits of an organism are referred to as a genotype. Physical features are referred to…

Q: In barley, a self-fertilizing species that can be cross-fertilized, two true-breeding strains with…

A: Cytoplasmic inheritance:Inheritance of genes those present in the organelles of the cytoplasm to the…

Q: In mice, short hair is dominant over long hair. If a heterozygous shorthaired male is crossed with a…

A: A gene is the basic structural and functional unit of heredity and is made of DNA(deoxyribonucleic…

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: 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: Referring to the pattern of inheritance of comb type and feathering in chicken, consider the cross…

A: The pattern of inheritance of comb type and feathering in chicken. First we will acknowledge that…

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: What is the probability of a child having type AB blood if one of the parents is heterozygous for A…

A: Blood groups present in the humans are: A, B, AB, O Each biological parent donates one of two ABO…

Q: A geneticist crosses two yellow mice with straight hair and obtains the following progeny: 1/2…

A: A dihybrid cross is a pairing procedure in which two different, genetically determined…

Q: In a cross between AaBbCcDDee x aaBbCcddEe, what is the probability of  obtaining the following?…

A: Product rule is used in this case. The product of probability of each gene is done to find the…

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

A: The pedigree is a family tree diagram that depicts the inheritance pattern in a family. The female…

Q: Radishes may be round, oval and lomg. Aside from this, they may be red, purple or white in color.…

A: Let the genotype be: RR- red Rr - purple rr - white LL - long Ll - oval ll - round Both purple and…

Q: Assume that you have a garden and some pea plants have solid leaves and others have striped leaves.…

A: The DNA (deoxyribonucleic acid) is the hereditary form of an organism that is passed on by the…

Q: Seed color is controlled by 3 independently assorting bi-allelic genes (P, Q, R), such that…

A: The correct answer to this question: option d. 4:1

Q: In aliens, the genes A, B, C, D and E are dominant to their respective alleles a, b, c, d and e:…

A: A dominant allele is one that expresses itself in homozygous as well as heterozygous condition. A…

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

A: The organisms with two same alleles at a genetic locus is called as a homozygote. The organism with…

Q: A) Calculate the map distance separating the three genes B) Which gene is in the middle?

A: Symbol  white eyes = r short wings = l  ebony bodies = g    red eyes = R long wings = L  Gray bodies…

Q: In fruit flies (Drosophila melanogaster), the bn+ allele for normal dull red eyes is dominant to the…

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

Q: In snails, the maternal gene influences the phenotype of the direction of snail coiling. If D is an…

A: dd female cross with dd male..

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: In rabbits, gray hair (G) is dominant to white hair (g), and black eyes (B) are dominant to red eyes…

A: The genotype is the genetic material passed down through generations, while the phenotype is an…

Q: Imagine a cross between a man and a woman having the following genotypes:    Genotype of the…

A: Dominant allele In genetics, it refers to the situation of one allele masking the affect of other…

Q: Individuals of genotype AaBb were mated to individuals of genotype aabb. One thousand offspring were…

A: Individuals of genotype AaBb were mated to individuals of genotype aabb. One thousand offspring were…

Q: A man with blood type O (genotype ii) has a father with blood type A and a mother with blood type B.…

A: In human blood group typing, the ABO system of blood grouping is used.  The Blood groups are A, B,…

Q: Strain A Strain B BB bb A a Virescent Virescent F1 NOT FOR A Virescent

A: The female strain of barley with genotype BB is virescent While the strain B male with genotype Bb…

Q: If a man and a woman, both with normal vision, marry and have a colorblind son, draw the Punnet…

A: Colorblindness and hemophilia are X-linked recessive disorders. They are transmitted from female…

Q: Referring to the pattern of inheritance of comb type and feathering in chicken, consider the cross…

A: Here the hen is given heterozygous feathering and walnut comb and cock is walnut comb and feathered…

Q: Using the letter "G" to represent the dominant-acting allele and the letter "g" for the recessive,…

A: The pedigree analysis is referred to as the study of an inherited trait in a family. It helps in…

Q: In mice, the presence of AA alleles give rise to the agouti fur color, AAY gives rise to a yellow…

A: Introduction  Lethal genes are the genes which are essential for survival. The allele which created…

Q: In fruit flies, the phenotype for eye color is determined by a certain locus. E indicates the…

A: In the Drosophilidae family, Drosophila melanogaster is a fly species that are Diptera in the order.…

Q: barley, a self-fertilizing species that can be cross-fertilized, two true-breeding strains with…

A: Reciprocal cross is done where different parental types are used both as a maternal form and as a…

Q: In the ABO blood group, type A has three subtypes with an order of dominance shown as A 1> A 2> A 3…

A: Blood group A has 3 subtypes occurring in a population. The more dominant a blood type is the more…

Q: In dogs, dark coat color is dominant over albino, andshort hair is dominant over long hair. Assume…

A: Hereditary qualities is the study of genes and heredity of how certain characteristics or attributes…

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: The father of two children is type O+, and the mother is type A+. The children are O- and A+. Given…

A: Human blood type is determined by co-dominant alleles. There are three different alleles for human…

Q: In fruit flies, Cinnabar eyes are encoded by a recessive allele located on the X chromosome. If a…

A: An allele may be defined as different forms of the same gene. The dominant allele is the one that…

Q: For an X-linked recessive allele, what proportion of female offspring will be carriers in the cross…

A: The X-linked recessive disease is caused by the presence of one X-linked recessive allele. It is an…

Q: The three genes X, Y, and Z are linked on an autosomal chromosome in humans (X to Y is 15 cM, and Y…

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…

Q: In the pedigree attached, the shaded symbols represent people affected with a neurological disorder…

A: The pedigree is the family history of a particular disease that involves several signs and symbols…

Q: The genes for tall vine D and yellow seed G, are dominant over their respective alleles for dwarf d…

A: D encodes tall phenotype. It is dominant over d allele. The recessive phenotype is dwarf height. G…

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.