Mice of the genotypes A/A ; B/B ; C/C ; D/D ; S/S anda/a ; b/b ; c/c ; d/d ; s/s are crossed. The progeny are intercrossed. What phenotypes will be produced in the F2 andin what proportions? [The allele symbols stand for thefollowing: A = agouti, a = solid (nonagouti); B = blackpigment, b = brown; C = pigmented, c = albino; D =nondilution, d = dilution (milky color); S = unspotted,s = pigmented spots on white background.]

Q: Calculate the probability of either all-dominant or all-recessive genotypes for the alleles A, B, E,…

A: For each gene pair, the probability of getting a homozygous dominant genotype (e.g., AABB) is 1/4…

Q: There are two common alleles for the TAS2R38 gene on Chromosome 7. This gene encodes a…

A: A dihybrid cross is a cross that is made between two parents by considering two different traits…

Q: Female fruit flies from a true-breeding strain with yellow body and cut wings are mated to male…

A: The physical separation between the positions of two genes on a chromosome is referred to as the…

Q: In corn, purple kernels (P) are dominant over yellow kernels (p). Starchy kernels (Su) are dominant…

A: Given data: In corn, the purple Kernels (P) are dominant over the yellow kernels (p). Similarly,…

Q: A large ear of corn has a total of 433 grains, including 271 purple & smooth, 73 purple &…

A: The objective of this question is to determine if the observed phenotypic ratio in the corn grains…

Q: We have dealt mainly with only two genes, but the sameprinciples hold for more than two genes.…

A: a) To find: What proportion of progeny will phenotypically resemble (1) the first parent (2) the…

Q: pt pt PT PPTt purple tall PpTt purple tall Pt Pptt purple white Pptt purple white Using any two…

A: In a flower, the color of the petals is encoded by the gene P and the height of the plant is encoded…

Q: A female hamster from a true-breeding big-eared strain was crossed to a male hamster from a…

A: In a genetic cross involving true-breeding hamster strains with varying ear size and whisker length,…

Q: Given the map a 15 b 24 c (where 15 and 24 are the respective map distance between the loci) with a…

A: The question is related to 3 point test cross. This cross is used to determine relative position of…

Q: Two true-breeding Triffid strains (poison stingers and no stingers) are crossed. All F1 progeny have…

A: Introduction :- True breeding strains are the strains in which homozygous condition is present means…

Q: || AB ||| AA 1 0₂ AA AB 2 BB 0₁ In this pedigree A and B represent alleles at a marker locus very…

A: Introduction : The study of a specific trait that is passed down from one generation to the next is…

Q: The non-wild-type alleles are k (clipped wings), l (long tail), and m (magical powers). The parental…

A: Here the test cross that produced 1572 offspring was conducted between k/k+  l/l+  m/m+…

Q: But for part A if you cross dd ll x DD LL, won't all the offspring be DdLl (dark colored and long…

A: Homozygous  The individual who has both same variant of allele of a gene  of a particular…

Q: In a parental cross of a ADHL disease trait, where the father is affected and the mother is…

A: ADHL disease is a autosomal dominant trait

Q: A fly that is heterozygous at 3 different, independent, autosomal loci (AaBbCc) is crossed to an…

A: The genotype is defined as the genetic constitution or composition of an individual. Thus, it is the…

Q: Three genes yellow (y) white (w) and cut (ct) are under investigation for possible linkage on the X…

A: If the genes are located on the chromosome then they are classified as linked genes. In this…

Q: These genotypes are crossed: AaBbCcdd x AabbCcDd. What will the proportion of the following…

A: The proportion of the AAbbCcdd: 1/4*1/2**1/4*1/2 = 1/16

Q: 1. Parents with the following genotypes were crossed: RR x rr 2. Make a Punnett Square using these…

A: Genetics is the branch of science that deals with study of heredity and inheritance. The process of…

Q: Some sweet-pea plants have purple flowers and others have white flowers. A homozygous variety of…

A: In Mendel’s laws of inheritance, the traits express themselves according to their recessive or…

Q: In cats, S = short hair; s = long hair; XC = black coat; Xc = yellow coat; XCXc = tortoiseshell…

A: Alleles are alternate forms that a gene can take. Alleles can be dominant over a recessive allele.…

Q: What will be the results of the following crosses, where N is black, n is brown, L is short hair and…

A: A dihybrid cross represents the combination of two species that are hybrid in two ways. A…

Q: Which of the pedigree diagrams below is most likely to show a family with X-linked…

A: A failure to synthesize B cells or the immunoglobulins (antibodies) which the B cells produce…

Q: From parents of genotypes A/A ⋅ B/B and a/a ⋅ b/b, adihybrid was produced. In a testcross of the…

A: results provide :

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

A: Mendel's law of dominance states that any gene will have a minimum of two alleles(traits or forms)…

Q: A pure-breeding (or true-breeding) individual is homozygous for all genes of interest. From the…

A: True breed refers to the presence of homozygous genotype for each genes.  According to product rule,…

Q: ABO Blood Type The following pedigree shows the incidence of ABO blood types in a family. dentify…

A: ABO Blood TypeThe following pedigree shows the incidence of ABO blood types in a family. Parents: AB…

Q: Cross 1 AaBb x AaBb Cross 2 AaBbCc x AaBbCc a) Please use a branching diagram to find the…

A: A branching diagram, also known as a Punnett square, can help determine the genotypic ratios of the…

Q: among a certain breed of dog, short hair is dominant to long hair and dark coat is dominant to white…

A: The quest explores how a particular dog breed with particular dominance tendencies inherits two…

Q: In cats, S = short hair; s = long hair; XC = black coat; Xc = yellow coat; XCXc = tortoiseshell…

A: Inheritance is the process of transmitting the traits from parent to offspring. Traits of an…

Q: A female animal with genotype A/a ⋅ B/b is crossed with a double-recessive male (a/a ⋅ b/b). Their…

A: The inheritance doesn’t always follow patterns explained by mendelian laws. It is important to…

Q: What will be the PR and GR of the following crosses? Give also their phenotypes.  (Designate your…

A: Genotype can be defined as the total number of genes present in the individual. The genotype focuses…

Q: The A & B antigens in humans may be found in water-soluble forms in secretions, including saliva of…

A: Antigens are generated in the human body by the allelic activity of the A, B, and O group loci in…

Q: An individual heterozygous for d e f (D/d E/e F/f) was crossed to a homozygous recessive individual…

A: DNA is present inside the nucleus of the cell. The genes are located on the DNA. The genes consist…

Q: The expected progeny ratio of an intercross would be (assume no linkage): a- 1 AaBb, 1 Aabb, 1 aaBb,…

A: Progeny ratio is the ratio of phenotypes among the offspring. when AaBb x AaBb crosses, A and the B…

Q: In Figure 4-14, in the bottom row four colors are labeledSCO. Why are they not all the same size…

A: Crossover is the event of recombination that occurs during meiosis.

Q: 6 Coat colour in cattle is determined by a set of incomplete dominant alleles. There is an allele…

A: Incomplete dominance: is called as partial dominance occurs when both alleles at single gene locus…

Q: In corn, the cross WW ee FF × ww EE ff is made. The three loci are linked as follows:Assume no…

A: The field of science associated with the study of genetic material or hereditary material of a…

Q: ule Hon-taster, daughter in question 5 is a carrier of the albino trait. She marries a taster man,…

A: Mendelian inheritance problems can be solved by doing multiple crosses such as dihybrid cross,…

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.