A scientist is investigating the inheritance of two autosomal recessive genes in rat, ear length (long is dominant to short) and fur color (gray is dominant to white). The table below provides the number of observed off-spring for each phenotype, when heterozygous rats are crossed.  What are the expected values for each phenotype? Phenotype Observed Expected Long, gray 189   Long, white 56   Short, gray 74   Short, white 23   Total 342

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: In common laboratory mice, there are three recessive genes known as: h, hotfoot pattern and o, obese…

A: It is a three-point cross. The most frequent genotype is the parental genotype. The least frequent…

Q: In birds, a wingspan is determined by two genes, one with complete dominance of one allele over the…

A: Introduction :- Complete dominance is the phenomenon in which one allele which is dominant…

Q: This my third time posting the same question. Because no one answer it straight to me. I already…

A: Explanation and answer of the first question: (a). To determine the probability of a bean with…

Q: I have answered this question but I want to make sure I have the correct answers could you please…

A: A polygenic trait is the one whose phenotype is influenced by more than one gene. These traits…

Q: If two doubly-heterozygous Cookie-monster blue-haired muppets mate, and produce 3200 children, which…

A: Epistasis is defined as an event occurring in genetics which shows the effect of gene mutation…

Q: The ABO blood group has three different alleles: , P, and i. The genotypes and phenotypes (blood…

A: Blood group of a particular individual can be evaluated by the presence or absence of antigen on the…

Q: Two heterozygous black pigs are mated. Show the genotypes, phenotypes, and probabilities of the…

A: Answer

Q: You are given a pea that produces round, yellow seeds (both dominant traits, alleles R and Y), but…

A: Given  Unknown plant phenotype - round yellow  Crossed with true recessive plant    Symbol used…

Q: A researcher crosses mice with apricot eyes and long tails, and the F1 progeny were recovered in the…

A: Chi square test is used to find the statistical results of a problem in which the null hypothesis is…

Q: The color of summer squash is determined by 2 interacting loci where the genotype A-B- results in…

A: Gene interaction is a phenomenon in which two genes or the alleles of the genes interact with each…

Q: In a species of the cat family, eye colour can be gray, blue, green or brown, and each colour is…

A: Given:

Q: In dogs, black fur (B) is dominant to brown fur (b). In a genetic cross of two dogs that are…

A: It is given that black fur (B) is dominant over brown fur (b). The cross is between two dogs with…

Q: In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles…

A: Dominant allele  The allele which mask or override the character of other gene which present in the…

Q: Below is a pedigree of a rare human genetic disease in which stricken individuals are solid-colored.…

A: There are five modes of inheritance and they are X-linked dominant, X-linked recessive, autosomal…

Q: In a testcross, the parent that is homozygous recessive for the genes being studied is called the…

A: ANSWER;-c)option C is correct. Explain;- A test cross is to test the genotype of an unknown sample…

Q: A researcher hypothesizes that, in mice, two autosomal dominant traits, trait Q and trait R, are…

A: In living organisms, the differences in the specific traits are due to the presence of two versions…

Q: Three different genes determine the coat colour of cats. One of the genes controls the black-based…

A: Homozygous dominant is represented by both capital letter such as TT for tall. Heterozygous dominant…

Q: n shorthorn cattle, coat color may be red, white, or roan. Roan is an intermediate phenotype…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: In birds, wingspan is determined by two genes, one with complete dominance of one allele over the…

A: The mean of the data is determined by  Mean = ∑total number of valuesvalue Mean = (20 + 19.6 + 18.3…

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

A: Dominant traits are those that are expressed when in heterozygous condition and who mask the…

Q: In fruit flies, normal wings (G) are dominant to glossy wings (g) and red eyes (R) are dominant to…

A: Phenotypic expression seen in organisms are shown by genes. Most genes have two alleles and the…

Q: In pea plants, inflated pod is governed by a completely dominant gene and a constricted pod by a…

A: An Individuals receive two allele of each gene from each parent . These allele may be dominant or…

Q: short eared mutant male rabbit was crossed with normal long eared doe rabbits and 29 long eared and…

A: This is a type of monohybrid cross because only one character is involved. Dominant character can…

Q: In birds, wingspan is determined by two genes, one with complete dominance of one allele over the…

A: Mean is the sum of all the values divided by total number of values. Variance is the sum of the…

Q: In guinea pigs, rough coats (with lots of swirly cowlicks) are dominant over smooth coats. If an RR…

A: A monohybrid cross-refers to the Mendelian cross which is performed when a single trait is being…

Q: In mice, the Y locus controls coat color, and the Y allele (yellow) is dominant to y (non-yellow).…

A: In multicellular and other eukaryotic organisms, the genetic makeup of the organism consists of 2…

Q: If two alleles of a gene are codominant, and an individual that is homozygous for one allele is…

A: Let P and p are two alleles. These two alleles are Codominant to each other.

Q: In mice, the gene (C) for colored fur is dominant over its allele (c) for white. The gene (N) for…

A: The parental gene separation takes place by independent assortment and form offsprings .This follows…

Q: A cross occurs between a black homozygous mouse and a white homozygous mouse. They produce a gray…

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

Q: One autosomal gene with two alleles determines how fully feathers are pigmented in the chicken, as…

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

Q: red beetle with genotype AABB is crossed with a yellow beetle with genotype aabb. The heterozygous…

A: INTRODUCTION Dominant allele is the allele whose character is expressed in the progeny, the…

Q: In a species of the cat family, eye color can be gray, blue, green, or brown, and each trait is true…

A: A monohybrid cross includes the inheritance of a single gene and gives 3:1 ratio in the F2…

Q: You are given a pea that produces round, yellow seeds (both dominant traits), but its genotype is…

A: Test cross perform between an unknown genotype and a pure homozygous recessive trait. This crosse…

Q: Based on the allelic gene interaction in Australian milking shorthorn cattle breeds, the mating of a…

A: A genotype is the collection of genes in an individual.  Each trait is encoded by a pair of genes,…

Q: Three different genes determine the coat colour of cats. One of the genes controls the black-based…

A: A phenotype is a measurable or observable characteristic of an organism. The phenotype is the…

Q: In fruit flies, brick-red eye color is dominant to a bright orange color called cinnabar. A fruit…

A: The correct Answer is C

Q: In horses, two different genes affect the coat. One gene which codes for coat colour has 2…

A: Genetics is a branch of biology involved in the study of genes, genetic variation, and heredity in…

Q: Pigeons may exhibit a checkered or plain color patterns. In a series of controlled mating the…

A: In the above question, the checkered-color pigeon is crossed with a plain colored pigeon. In this…

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

A: Given: Long wings - Dominant - RR short wings - recessive - rr medium wings - Rr

Q: In mice, albinism (g) is recessive to grey coat colour (G). A grey mouse mated with an albino mouse.…

A: Each gene has two alternative forma known as alleles, which code for different versions of a…

Q: In mice, the presence of a dominant A allele results in the agouti pattern of fur color, whereas the…

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

Q: In a mating between two individuals that are heterozygous for a recessive lethal allele that is…

A: if one parent is homozygous dominant (WW) and the other is homozygous recessive (ww), then all…

Q: Which of the following rows correctly identifies the parental and F1 generation genotypes?

A: Given albinism is g which is recessive in nature, hence, in order to express this character the…

Q: The next two questions go together. Suppose the tail length of two populations of lizards is…

A: In genetics, the gene is the hereditary unit of life. A gene contains two alternative forms known as…

Q: In cats, coat color is an X-linked trait with incomplete dominance.  Yellow coat is caused by the…

A:

Q: A researcher crosses mice with brown eyes and long tails, and the F1 progeny were recovered in the…

A: Null hypothesis - The two traits given follow Mendelian pattern of inheritance.

Q: Which of the following is NOT a reason that a testcross is a useful technique when studying the…

A: Test cross is the best experiment done by the father of genetics (Gregor Mendel) on the garden pea…

Q: Two parental strains with mean heights of 64.29 and 135 cm. respectively were crossed. The F1 and F2…

A: Polygenes are groups of genes that are expressed together. The character is controlled by multiple…

Q: Consider the results of a three point linkage mapping testcross between a female (AaBbCC) and a male…

A: We know that test cross is performed always between the F1 progenies and recessive parents. So here,…

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.