7.13 In rabbits, the dominant allele C is required for colored fur; the recessive allele c makes the fur colorless (albino). In the presence of at least one C allele, another gene determines whether the fur is black (B, dominant) or brown (b, recessive). A homozygous strain of brown rab- bits was crossed with a homozygous strain of albinos. The F, were then crossed to homozygous double reces- sive rabbits, yielding the following results: black 34; brown 66; albino 100. Are the genes b and clinked? What is the frequency of recombination? Diagram the crosses, showing the arrangement of the genetic markers on the chromosomes. 1

Q: 3.9 Which mode of inheritance is suggested by the fol- lowing pedigree? Based on this hypothesis,…

A: Pedigree is a diagrammatic representation of either phenotypes or genotypes of a particular organism…

Q: Coat color in mice (Mus musculus) can show many varieties.  You have two true-breeding mouse stains,…

A: True breeding is a type of breeding in which the parents produce offspring with the same phenotype.…

Q: A cross in Drosophila melanogaster involved the recessive X-linked genes for white eye (w), yellow…

A: The genotype expressed by most number of offspring is the parental genotype. Here, + y + and w + ct…

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

A: Introduction: Drosophila melanogaster is a species of fly in the family Drosophilidae. The species…

Q: were observed and used to make a map of these genes.  Calculate the interference.…

A: Answer. The linkage of the genes in a chromosome can be in the form of a genetic map or linkage map.…

Q: When a female melanotic fly is crossed with a normal male, the progeny are produced: 123 normal…

A: In the question, it is given that the in the F1 generation, the melanotic progeny is only expressed…

Q: 1) Imagine you discover a new mutant strain of tailless mice. Upon looking closer, you notice that I…

A: A test cross is defined as the method to explore the organism's genotype. Thus, it is an…

Q: You are mapping three linked loci in Drosophila melanogaster (the common laboratory fruit fly). You…

A: The fruit fly Drosophila is commonly associated with genetics due to the dominance of post-Mendelian…

Q: For a given cross, the expected number of double recombinants is 18 and the observed number of…

A: The measure of genetic linkage is termed as recombination frequency, which is used in the…

Q: Multiple genes or polygenic inheritance: An additive effect of two or more genes on a single…

A: Polygenic inheritance is controlled by more than one genes.

Q: Cats also have a locus (gene) for a character called agouti. In cats with agouti fur, pigment is…

A: Given :    Agouti allele is dominant to the allele for normal fur.  Let's assume ' A ' for dominant…

Q: in the snall Capded nemoralis, an autosonmal allele causing a banded (Bº) is recessive to the allele…

A: Banded - BB Unbanded - B0   Yellow- CY Brown - CBW

Q: 3) In the snail Capaea nemoralis, an autosomal allele causing a banded shell (B®) is recessive to…

A: In independent assortment Genes inherit independently. They don't depend upon other gene for…

Q: regating loci are (P#1) AABbCcddEdFf and (P#2) AabbCcDDEdFf. F per case letters indicate dominant…

A: An allele could also be a variant form of a gene. Some genes have a spread of varied forms, that…

Q: Dominant negative Incomplete dominance Epistasis Recessive lethal allele III E ||| A condition where…

A: Introduction :  The field of science known as genetics deals with the study of heredity, genetic…

Q: 4) You design Drosophila crosses to provide recombination data for gene (A), which is located…

A: The location of genes on a particular chromosome can be determined on the basis of recombination…

Q: Using designations “Group A", "Group B," etc., organize the mutant strains into complementation…

A: A mutation is referred as to the transformations or change of the structure of a gene, the unit of…

Q: A mating between Abyssinian and blotched tabbies yielded a black kitten and several Abyssinians.…

A: In this scenario, we have two genes, A (Agouti) and T (Tabby), that determine coat color and pattern…

Q: 2 In rabbits, short hair is controlled by a dominant allele L while long hair is controlled by its…

A: The process that happens naturally by which genetic features are transferred from parents to their…

Q: A recessive maternal effect mutant in zebrafish, called ichabod, results in embryos lacking heads…

A: Maternal effect in zebrafish is a situation where the phenotype of an organism is determined not…

Q: The mutant genes for vestigial wings and singed bristles are approximately 30 map units apart on…

A: Each gene has two alleles, one is a dominant allele and another is a recessive allele. If the mutant…

Q: 820 eid 10 e bas ela od tot esqytoney od obvo 3. A woman with type AB blood type gave birth to a…

A: ABO grouping is based on two antigens: Antigen A and Antigen B. Using plasma antibodies and the…

Q: 3. 4 genes contribute to cobra length. The base (minimum) length is 6 feet for aabbccdd and the…

A: Gene at the molecular level can be explained by the nucleotide sequence present in the nucleic…

Q: You are given a Drosophila female that looks wild-type but is heterozygous for mutations in tan body…

A: Three-point cross: In genetics, the three-point cross is used to determine the distance between two…

Q: A recessive maternal effect mutant in zebrafish, called ichabod, results in embryos lacking heads…

A: The correct answer is option C.

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) Based upon the results of these crosses, is the dwarfism trait in Andean condors autosomal or…

A: Autosomal and sex-linked inheritance are two types of inheritance. Autosomal inheritance occurs when…

Q: 1 4 II 1 IV 2 3 (a) Ignoring the sibship in generation IV, what is the probability that both parents…

A: A pedigree chart helps to understand the presence and absence of the diseased trait in a family in…

Q: Drosophila females heterozygous for 3 recessive mutations a, b, and c were crossed to males…

A: The given cross involves Drosophila females that carry three recessive mutations (a, b, and c) in…

Q: Inversions are known to affect crossing-over. The following homologs have the indicated order (the…

A: Thank you for the question.  Answer : inversion is when there is disruption of a single chromosome (…

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.