Coat color in cats is determined by genes at several different loci. At one locus on the X chromosome, one allele (X +) encodes black fur; another allele (Xo) encodes orange fur. Females can be black (X +X +), orange (XoXo), or a mixture of orange and black called tortoiseshell (X +Xo). Males are either black (X +Y) or orange (XoY). Bill has a female tortoiseshell cat named Patches. One night Patches escapes from Bill’s house, spends the night out, and mates with a stray male. Patches later gives birth to the following kittens: one orange male, one black male, two tortoiseshell females, and one orange female. Give the genotypes of Patches, her kittens, and the stray male with which Patches mated.

Q: In mice, the green eye gene (g) are on the same chromosome as the long tail gene (1). The dominant…

A: Introduction :  Recombination is the process by which a segment of DNA recombines to create a new…

Q: The Hairless phenotype in Drosophila is caused by a recessive mutation in the H gene. Wild-type…

A: Gregor Mendel was an Austrian scientist and biologist who proposed laws of inheritance and these…

Q: 2) Coat color in cats is determined by genes at several different loci. At one locus on the X…

A: Here, the female is tortoiseshell. Genotype of tortoiseshell is given here as- x+xo. Off springs(…

Q: Based on the same data from the previous question:   cu  jv  se        31 +   +   se       99…

A: In Drosophila, curled wings (cu), javelin bristles (jv) and sepia eyes (se) are autosomal recessive…

Q: In human beings, the gene for red‑green colorblindness (r) is sex‑linked and recessive to its allele…

A: normal vision male =XR Ycolor blind male= XrYnormal vision female= XR XRcolorblind female =Xr Xr…

Q: In German cockroaches, bulging eyes (bu) are recessive to normal eyes (bu+), and curved wings (cv)…

A: Answer is e.bu cv+

Q: Eye color in Drosophila is determined by a gene is on the X chromosome, with the red-eye allele…

A: Each gene possesses two forms of alleles. These forms include a dominant allele and a recessive…

Q: Cross Cross A Cross A Cross B Cross B Phenotype F1 generation F2 generation F1…

A: The objective of the question is to determine the genotypes of the flies in different crosses and…

Q: What gamete must be donated by the father monster, and what is its probability? a) g l — 12.5% b) g…

A: Gametes are produced by the process of meiosis.

Q: In chickens, comb shape is determined by genes at two loci (R, r and P, p). A walnut comb is…

A: A rose comb is produced when at least one dominant gene is present at the first locus and two…

Q: In the Manx tailless phenotype of cats, the tailless phenotype is caused by the mutation ML and is…

A: If the Manx tailless phenotype is caused by the mutation ML and inherited as an autosomal dominant…

Q: Fruit flies express both normal wing shape and vestigial wing shape. The pedigree shows the…

A: Introduction :- Vestigial organs are organs that have no obvious function and are thought to be…

Q: Calculate probability of sex-linked phenotypes of multiple offspring using binomial expansion NLGN3…

A: The NLGN3 gene or Neuroligin 3 gene is a Protein Coding gene. This gene is located in X chromosome.…

Q: Draw a Punnett square for the dihybrid cross. There are two known alleles of gene occupying a…

A: Dihybrid cross involves two genes in a cross. That's why the two traits are involved in this cross.

Q: In jellyfish, let's say that long tentacles are produced by a sex-influenced allele that is dominant…

A: Given information In jellyfish, long tentacles are produced by a sex-influenced allele. The allele…

Q: Drosophila have XX/XY sex determination systems just like mammals. In Drosophila, loci for both eye…

A: Most creatures and many plants show sexual dimorphism; at the end of the day, an individual can be…

Q: Two different genes control the expression of kernel colour in Mexican black corn: black pigment…

A: Introduction :  Genetic traits are passed down through inheritance from parents to their offspring,…

Q: Male Drosophila from a true-breeding wild-type stock were irradiated with X-rays and then mated with…

A: J. Muller first showed in his experiment that exposure to certain dose of X-rays higher than the…

Q: A homozygous fly with two recessive mutations causing purple body and short wings (ppss) is mated…

A: Introduction :  Haplotype refers to a group of HLA genes found on a certain chromosome. These genes…

Q: Imagine that you set up a three-point mapping cross to determine the order of three X-linked genes.…

A: This is the case of three point test cross. The crossing over occurs between the heterozygous…

Q: In flies, long wings are a dominant trait, and short wings are a recessive trait. Medium wings are…

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

Q: What is the genetic distance between red petals and waxy texture?

A: Gene distance  Gene distance means the number of bases present between two gene. On the basis of…

Q: In Drosophila, a female with three recessive traits, miniature wings, (m), ebony body (e) and rough…

A: This question is about a genetic problem involving the inheritance of traits in Drosophila flies.…

Q: Which of the following is the genotype for a female with a yellow body and red eyes, who is…

A: Alleles are the different forms of a gene. The genotype of two same alleles is called homozygous…

Q: 1. Draw the pedigree for Amita's family and determine the mode of inheritance if any. 2. Explain how…

A: From the given data, it is clear that the disease is autosomal, not sex-linked. As if it was…

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: Kernel color in wheat is controlled by 2 pairs of genes (AABB). Determine the color of each…

A: The inheritance of kernel color in wheat is controlled by two genes. These are A and B genes.

Q: In smurfs, blue body (b+) is dominant to white body (b), round nose (r+) is dominant to pointy nose…

A: In Smurfs, The blue body is dominant to white body. So ‘b+’ is dominant and ‘b’ is recessive allele.…

Q: Your internship with Dr. Nefario at Gru Industries is going well so far, but a recent mission to…

A: This question asks us to apply the principles of Mendelian genetics to a hypothetical situation…

Q: The eye ring color in wood ducks is under the control of a single, sex linked gene.  The dominant…

A: Sex determination - Sex determination is defined as the biological system which is used to determine…

Q: In D. melanogaster, reduced bristles (rd), cinnabar eyes (cn), and vestigial wings (vg) are…

A: The tendency for DNA sequences that are close to one another on a chromosome to be passed down…

Q: Black coat Brown coat Yellow coat In a particular breed of dog, the following genotypes and their…

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

Q: A red-eyed (dominant) female with a grey (dominant) body is crossed with red-eyed (dominant) male…

A: The objective of the question is to deduce the genetic identity of the parent flies based on 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.